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Vasishta S, Ammankallu S, Poojary G, Gomes SM, Ganesh K, Umakanth S, Adiga P, Upadhya D, Prasad TSK, Joshi MB. High glucose induces DNA methyltransferase 1 dependent epigenetic reprogramming of the endothelial exosome proteome in type 2 diabetes. Int J Biochem Cell Biol 2024; 176:106664. [PMID: 39303850 DOI: 10.1016/j.biocel.2024.106664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 09/10/2024] [Accepted: 09/18/2024] [Indexed: 09/22/2024]
Abstract
In response to hyperglycemia, endothelial cells (ECs) release exosomes with altered protein content and contribute to paracrine signalling, subsequently leading to vascular dysfunction in type 2 diabetes (T2D). High glucose reprograms DNA methylation patterns in various cell/tissue types, including ECs, resulting in pathologically relevant changes in cellular and extracellular proteome. However, DNA methylation-based proteome reprogramming in endothelial exosomes and associated pathological implications in T2D are not known. Hence, in the present study, we used Human umbilical vein endothelial cells (HUVECs), High Fat Diet (HFD) induced diabetic mice (C57BL/6) and clinical models to understand epigenetic basis of exosome proteome regulation in T2D pathogenesis . Exosomes were isolated by size exclusion chromatography and subjected to tandem mass tag (TMT) labelled quantitative proteomics and bioinformatics analysis. Immunoblotting was performed to validate exosome protein signature in clinically characterized individuals with T2D. We observed ECs cultured in high glucose and aortic ECs from HFD mouse expressed elevated DNA methyltransferase1 (DNMT1) levels. Quantitative proteomics of exosomes isolated from ECs treated with high glucose and overexpressing DNMT1 showed significant alterations in both protein levels and post translational modifications which were aligned to T2D associated vascular functions. Based on ontology and gene-function-disease interaction analysis, differentially expressed exosome proteins such as Thrombospondin1, Pentraxin3 and Cystatin C related to vascular complications were significantly increased in HUVECs treated with high glucose and HFD animals and T2D individuals with higher levels of glycated hemoglobin. These proteins were reduced upon treatment with 5-Aza-2'-deoxycytidine. Our study shows epigenetic regulation of exosome proteome in T2D associated vascular complications.
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Affiliation(s)
- Sampara Vasishta
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Shruthi Ammankallu
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to Be University), Mangalore, Karnataka 575020, India
| | - Ganesha Poojary
- Department of Physiotherapy, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Sarah Michael Gomes
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Kailash Ganesh
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | | | - Prashanth Adiga
- Department of Reproductive Medicine and Surgery (MARC), Kasturba Hospital, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Dinesh Upadhya
- Centre for Molecular Neurosciences, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | | | - Manjunath B Joshi
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India.
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2
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Flores PC, Ahmed T, Podgorski J, Ortiz HR, Langlais PR, Mythreye K, Lee NY. Phosphoproteomic profiling identifies DNMT1 as a key substrate of beta IV spectrin-dependent ERK/MAPK signaling in suppressing angiogenesis. Biochem Biophys Res Commun 2024; 711:149916. [PMID: 38613866 PMCID: PMC11089540 DOI: 10.1016/j.bbrc.2024.149916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 04/03/2024] [Accepted: 04/06/2024] [Indexed: 04/15/2024]
Abstract
βIV-spectrin is a membrane-associated cytoskeletal protein that maintains the structural stability of cell membranes and integral proteins such as ion channels and transporters. Its biological functions are best characterized in the brain and heart, although recently we discovered a fundamental new role in the vascular system. Using cellular and genetic mouse models, we reported that βIV-spectrin acts as a critical regulator of developmental and tumor-associated angiogenesis. βIV-spectrin was shown to selectively express in proliferating endothelial cells (EC) and suppress VEGF/VEGFR2 signaling by enhancing receptor internalization and degradation. Here we examined how these events impact the downstream kinase signaling cascades and target substrates. Based on quantitative phosphoproteomics, we found that βIV-spectrin significantly affects the phosphorylation of epigenetic regulatory enzymes in the nucleus, among which DNA methyltransferase 1 (DNMT1) was determined as a top substrate. Biochemical and immunofluorescence results showed that βIV-spectrin inhibits DNMT1 function by activating ERK/MAPK, which in turn phosphorylates DNMT1 at S717 to impede its nuclear localization. Given that DNMT1 controls the DNA methylation patterns genome-wide, and is crucial for vascular development, our findings suggest that epigenetic regulation is a key mechanism by which βIV-spectrin suppresses angiogenesis.
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Affiliation(s)
- Paola Cruz Flores
- Department of Chemistry & Biochemistry, University of Arizona, Tucson, AZ, 85724, USA
| | - Tasmia Ahmed
- Department of Chemistry & Biochemistry, University of Arizona, Tucson, AZ, 85724, USA
| | - Julia Podgorski
- Department of Pharmacology, University of Arizona, Tucson, AZ, 85724, USA
| | - Hannah R Ortiz
- Department of Pharmacology, University of Arizona, Tucson, AZ, 85724, USA
| | - Paul R Langlais
- Department of Medicine, University of Arizona, Tucson, AZ, 85724, USA
| | | | - Nam Y Lee
- Department of Pharmacology, University of Arizona, Tucson, AZ, 85724, USA; Comprehensive Cancer Center, University of Arizona, Tucson, AZ, 85724, USA.
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3
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Mishra J, Chakraborty S, Niharika, Roy A, Manna S, Baral T, Nandi P, Patra SK. Mechanotransduction and epigenetic modulations of chromatin: Role of mechanical signals in gene regulation. J Cell Biochem 2024; 125:e30531. [PMID: 38345428 DOI: 10.1002/jcb.30531] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 01/08/2024] [Accepted: 01/26/2024] [Indexed: 03/12/2024]
Abstract
Mechanical forces may be generated within a cell due to tissue stiffness, cytoskeletal reorganization, and the changes (even subtle) in the cell's physical surroundings. These changes of forces impose a mechanical tension within the intracellular protein network (both cytosolic and nuclear). Mechanical tension could be released by a series of protein-protein interactions often facilitated by membrane lipids, lectins and sugar molecules and thus generate a type of signal to drive cellular processes, including cell differentiation, polarity, growth, adhesion, movement, and survival. Recent experimental data have accentuated the molecular mechanism of this mechanical signal transduction pathway, dubbed mechanotransduction. Mechanosensitive proteins in the cell's plasma membrane discern the physical forces and channel the information to the cell interior. Cells respond to the message by altering their cytoskeletal arrangement and directly transmitting the signal to the nucleus through the connection of the cytoskeleton and nucleoskeleton before the information despatched to the nucleus by biochemical signaling pathways. Nuclear transmission of the force leads to the activation of chromatin modifiers and modulation of the epigenetic landscape, inducing chromatin reorganization and gene expression regulation; by the time chemical messengers (transcription factors) arrive into the nucleus. While significant research has been done on the role of mechanotransduction in tumor development and cancer progression/metastasis, the mechanistic basis of force-activated carcinogenesis is still enigmatic. Here, in this review, we have discussed the various cues and molecular connections to better comprehend the cellular mechanotransduction pathway, and we also explored the detailed role of some of the multiple players (proteins and macromolecular complexes) involved in mechanotransduction. Thus, we have described an avenue: how mechanical stress directs the epigenetic modifiers to modulate the epigenome of the cells and how aberrant stress leads to the cancer phenotype.
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Affiliation(s)
- Jagdish Mishra
- Epigenetics and Cancer Research Laboratory, Department of Life Science, Biochemistry and Molecular Biology Group, National Institute of Technology, Rourkela, Odisha, India
| | - Subhajit Chakraborty
- Epigenetics and Cancer Research Laboratory, Department of Life Science, Biochemistry and Molecular Biology Group, National Institute of Technology, Rourkela, Odisha, India
| | - Niharika
- Epigenetics and Cancer Research Laboratory, Department of Life Science, Biochemistry and Molecular Biology Group, National Institute of Technology, Rourkela, Odisha, India
| | - Ankan Roy
- Epigenetics and Cancer Research Laboratory, Department of Life Science, Biochemistry and Molecular Biology Group, National Institute of Technology, Rourkela, Odisha, India
| | - Soumen Manna
- Epigenetics and Cancer Research Laboratory, Department of Life Science, Biochemistry and Molecular Biology Group, National Institute of Technology, Rourkela, Odisha, India
| | - Tirthankar Baral
- Epigenetics and Cancer Research Laboratory, Department of Life Science, Biochemistry and Molecular Biology Group, National Institute of Technology, Rourkela, Odisha, India
| | - Piyasa Nandi
- Epigenetics and Cancer Research Laboratory, Department of Life Science, Biochemistry and Molecular Biology Group, National Institute of Technology, Rourkela, Odisha, India
| | - Samir K Patra
- Epigenetics and Cancer Research Laboratory, Department of Life Science, Biochemistry and Molecular Biology Group, National Institute of Technology, Rourkela, Odisha, India
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Geiger M, Gorica E, Mohammed SA, Mongelli A, Mengozi A, Delfine V, Ruschitzka F, Costantino S, Paneni F. Epigenetic Network in Immunometabolic Disease. Adv Biol (Weinh) 2024; 8:e2300211. [PMID: 37794610 DOI: 10.1002/adbi.202300211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 09/08/2023] [Indexed: 10/06/2023]
Abstract
Although a large amount of data consistently shows that genes affect immunometabolic characteristics and outcomes, epigenetic mechanisms are also heavily implicated. Epigenetic changes, including DNA methylation, histone modification, and noncoding RNA, determine gene activity by altering the accessibility of chromatin to transcription factors. Various factors influence these alterations, including genetics, lifestyle, and environmental cues. Moreover, acquired epigenetic signals can be transmitted across generations, thus contributing to early disease traits in the offspring. A closer investigation is critical in this aspect as it can help to understand the underlying molecular mechanisms further and gain insights into potential therapeutic targets for preventing and treating diseases arising from immuno-metabolic dysregulation. In this review, the role of chromatin alterations in the transcriptional modulation of genes involved in insulin resistance, systemic inflammation, macrophage polarization, endothelial dysfunction, metabolic cardiomyopathy, and nonalcoholic fatty liver disease (NAFLD), is discussed. An overview of emerging chromatin-modifying drugs and the importance of the individual epigenetic profile for personalized therapeutic approaches in patients with immuno-metabolic disorders is also presented.
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Affiliation(s)
- Martin Geiger
- Center for Translational and Experimental Cardiology, University Hospital Zürich and University of Zürich, Wagistrasse 12, Schlieren, Zurich, 8952, Switzerland
| | - Era Gorica
- Center for Translational and Experimental Cardiology, University Hospital Zürich and University of Zürich, Wagistrasse 12, Schlieren, Zurich, 8952, Switzerland
| | - Shafeeq Ahmed Mohammed
- Center for Translational and Experimental Cardiology, University Hospital Zürich and University of Zürich, Wagistrasse 12, Schlieren, Zurich, 8952, Switzerland
| | - Alessia Mongelli
- Center for Translational and Experimental Cardiology, University Hospital Zürich and University of Zürich, Wagistrasse 12, Schlieren, Zurich, 8952, Switzerland
| | - Alessandro Mengozi
- Center for Translational and Experimental Cardiology, University Hospital Zürich and University of Zürich, Wagistrasse 12, Schlieren, Zurich, 8952, Switzerland
| | - Valentina Delfine
- Center for Translational and Experimental Cardiology, University Hospital Zürich and University of Zürich, Wagistrasse 12, Schlieren, Zurich, 8952, Switzerland
| | - Frank Ruschitzka
- Center for Translational and Experimental Cardiology, University Hospital Zürich and University of Zürich, Wagistrasse 12, Schlieren, Zurich, 8952, Switzerland
| | - Sarah Costantino
- Center for Translational and Experimental Cardiology, University Hospital Zürich and University of Zürich, Wagistrasse 12, Schlieren, Zurich, 8952, Switzerland
- University Heart Center, University Hospital Zurich and University of Zürich, Wagistrasse 12, Schlieren, Zurich, 8952, Switzerland
| | - Francesco Paneni
- Center for Translational and Experimental Cardiology, University Hospital Zürich and University of Zürich, Wagistrasse 12, Schlieren, Zurich, 8952, Switzerland
- University Heart Center, University Hospital Zurich and University of Zürich, Wagistrasse 12, Schlieren, Zurich, 8952, Switzerland
- Department of Research and Education, University Hospital Zurich and University of Zürich, Wagistrasse 12, Schlieren, Zurich, 8952, Switzerland
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5
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Zhang L, Xia C, Yang Y, Sun F, Zhang Y, Wang H, Liu R, Yuan M. DNA methylation and histone post-translational modifications in atherosclerosis and a novel perspective for epigenetic therapy. Cell Commun Signal 2023; 21:344. [PMID: 38031118 PMCID: PMC10688481 DOI: 10.1186/s12964-023-01298-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 08/27/2023] [Indexed: 12/01/2023] Open
Abstract
Atherosclerosis, which is a vascular pathology characterized by inflammation and plaque build-up within arterial vessel walls, acts as the important cause of most cardiovascular diseases. Except for a lipid-depository and chronic inflammatory, increasing evidences propose that epigenetic modifications are increasingly associated with atherosclerosis and are of interest from both therapeutic and biomarker perspectives. The chronic progressive nature of atherosclerosis has highlighted atherosclerosis heterogeneity and the fact that specific cell types in the complex milieu of the plaque are, by far, not the only initiators and drivers of atherosclerosis. Instead, the ubiquitous effects of cell type are tightly controlled and directed by the epigenetic signature, which, in turn, is affected by many proatherogenic stimuli, including low-density lipoprotein, proinflammatory, and physical forces of blood circulation. In this review, we summarize the role of DNA methylation and histone post-translational modifications in atherosclerosis. The future research directions and potential therapy for the management of atherosclerosis are also discussed. Video Abstract.
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Affiliation(s)
- Liang Zhang
- Department of Cardiology, Xijing Hospital, Air Force Military Medical University, No. 127 Changle West Road, Xi'an, 710032, China
| | - Chenhai Xia
- Department of Cardiology, Xijing Hospital, Air Force Military Medical University, No. 127 Changle West Road, Xi'an, 710032, China
| | - Yongjun Yang
- Department of Cardiology, Xijing Hospital, Air Force Military Medical University, No. 127 Changle West Road, Xi'an, 710032, China
| | - Fangfang Sun
- Department of Cardiology, Xijing Hospital, Air Force Military Medical University, No. 127 Changle West Road, Xi'an, 710032, China
| | - Yu Zhang
- Department of Cardiology, Xijing Hospital, Air Force Military Medical University, No. 127 Changle West Road, Xi'an, 710032, China
| | - Huan Wang
- Department of Cardiology, Xijing Hospital, Air Force Military Medical University, No. 127 Changle West Road, Xi'an, 710032, China
| | - Rui Liu
- Department of Rehabilitation, Tangdu Hospital, Air Force Military Medical University, No. 1 Xinsi Road, Xi'an 710000, China.
| | - Ming Yuan
- Department of Cardiology, Xijing Hospital, Air Force Military Medical University, No. 127 Changle West Road, Xi'an, 710032, China.
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6
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Tamargo IA, Baek KI, Kim Y, Park C, Jo H. Flow-induced reprogramming of endothelial cells in atherosclerosis. Nat Rev Cardiol 2023; 20:738-753. [PMID: 37225873 PMCID: PMC10206587 DOI: 10.1038/s41569-023-00883-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/25/2023] [Indexed: 05/26/2023]
Abstract
Atherosclerotic diseases such as myocardial infarction, ischaemic stroke and peripheral artery disease continue to be leading causes of death worldwide despite the success of treatments with cholesterol-lowering drugs and drug-eluting stents, raising the need to identify additional therapeutic targets. Interestingly, atherosclerosis preferentially develops in curved and branching arterial regions, where endothelial cells are exposed to disturbed blood flow with characteristic low-magnitude oscillatory shear stress. By contrast, straight arterial regions exposed to stable flow, which is associated with high-magnitude, unidirectional shear stress, are relatively well protected from the disease through shear-dependent, atheroprotective endothelial cell responses. Flow potently regulates structural, functional, transcriptomic, epigenomic and metabolic changes in endothelial cells through mechanosensors and mechanosignal transduction pathways. A study using single-cell RNA sequencing and chromatin accessibility analysis in a mouse model of flow-induced atherosclerosis demonstrated that disturbed flow reprogrammes arterial endothelial cells in situ from healthy phenotypes to diseased ones characterized by endothelial inflammation, endothelial-to-mesenchymal transition, endothelial-to-immune cell-like transition and metabolic changes. In this Review, we discuss this emerging concept of disturbed-flow-induced reprogramming of endothelial cells (FIRE) as a potential pro-atherogenic mechanism. Defining the flow-induced mechanisms through which endothelial cells are reprogrammed to promote atherosclerosis is a crucial area of research that could lead to the identification of novel therapeutic targets to combat the high prevalence of atherosclerotic disease.
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Affiliation(s)
- Ian A Tamargo
- Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, GA, USA
- Molecular and Systems Pharmacology Program, Emory University, Atlanta, GA, USA
| | - Kyung In Baek
- Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, GA, USA
| | - Yerin Kim
- Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, GA, USA
| | - Christian Park
- Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, GA, USA
| | - Hanjoong Jo
- Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, GA, USA.
- Molecular and Systems Pharmacology Program, Emory University, Atlanta, GA, USA.
- Department of Medicine, Emory University School, Atlanta, GA, USA.
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Mannion AJ, Holmgren L. Nuclear mechanosensing of the aortic endothelium in health and disease. Dis Model Mech 2023; 16:dmm050361. [PMID: 37909406 PMCID: PMC10629673 DOI: 10.1242/dmm.050361] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023] Open
Abstract
The endothelium, the monolayer of endothelial cells that line blood vessels, is exposed to a number of mechanical forces, including frictional shear flow, pulsatile stretching and changes in stiffness influenced by extracellular matrix composition. These forces are sensed by mechanosensors that facilitate their transduction to drive appropriate adaptation of the endothelium to maintain vascular homeostasis. In the aorta, the unique architecture of the vessel gives rise to changes in the fluid dynamics, which, in turn, shape cellular morphology, nuclear architecture, chromatin dynamics and gene regulation. In this Review, we discuss recent work focusing on how differential mechanical forces exerted on endothelial cells are sensed and transduced to influence their form and function in giving rise to spatial variation to the endothelium of the aorta. We will also discuss recent developments in understanding how nuclear mechanosensing is implicated in diseases of the aorta.
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Affiliation(s)
- Aarren J. Mannion
- Department of Oncology-Pathology, Karolinska Institute, Stockholm 171 64, Sweden
| | - Lars Holmgren
- Department of Oncology-Pathology, Karolinska Institute, Stockholm 171 64, Sweden
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Wołowiec A, Wołowiec Ł, Grześk G, Jaśniak A, Osiak J, Husejko J, Kozakiewicz M. The Role of Selected Epigenetic Pathways in Cardiovascular Diseases as a Potential Therapeutic Target. Int J Mol Sci 2023; 24:13723. [PMID: 37762023 PMCID: PMC10531432 DOI: 10.3390/ijms241813723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/03/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
Epigenetics is a rapidly developing science that has gained a lot of interest in recent years due to the correlation between characteristic epigenetic marks and cardiovascular diseases (CVDs). Epigenetic modifications contribute to a change in gene expression while maintaining the DNA sequence. The analysis of these modifications provides a thorough insight into the cardiovascular system from its development to its further functioning. Epigenetics is strongly influenced by environmental factors, including known cardiovascular risk factors such as smoking, obesity, and low physical activity. Similarly, conditions affecting the local microenvironment of cells, such as chronic inflammation, worsen the prognosis in cardiovascular diseases and additionally induce further epigenetic modifications leading to the consolidation of unfavorable cardiovascular changes. A deeper understanding of epigenetics may provide an answer to the continuing strong clinical impact of cardiovascular diseases by improving diagnostic capabilities, personalized medical approaches and the development of targeted therapeutic interventions. The aim of the study was to present selected epigenetic pathways, their significance in cardiovascular diseases, and their potential as a therapeutic target in specific medical conditions.
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Affiliation(s)
- Anna Wołowiec
- Department of Geriatrics, Division of Biochemistry and Biogerontology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, 87-100 Torun, Poland
| | - Łukasz Wołowiec
- Department of Cardiology and Clinical Pharmacology, Faculty of Health Sciences, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, 87-100 Torun, Poland
| | - Grzegorz Grześk
- Department of Cardiology and Clinical Pharmacology, Faculty of Health Sciences, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, 87-100 Torun, Poland
| | - Albert Jaśniak
- Department of Cardiology and Clinical Pharmacology, Faculty of Health Sciences, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, 87-100 Torun, Poland
| | - Joanna Osiak
- Department of Cardiology and Clinical Pharmacology, Faculty of Health Sciences, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, 87-100 Torun, Poland
| | - Jakub Husejko
- Department of Cardiology and Clinical Pharmacology, Faculty of Health Sciences, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, 87-100 Torun, Poland
| | - Mariusz Kozakiewicz
- Department of Geriatrics, Division of Biochemistry and Biogerontology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, 87-100 Torun, Poland
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9
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Zhao J, Zhao C, Yang F, Jiang Z, Zhu J, Yao W, Pang W, Zhou J. DNMT1 mediates the disturbed flow-induced endothelial to mesenchymal transition through disrupting β-alanine and carnosine homeostasis. Theranostics 2023; 13:4392-4411. [PMID: 37649604 PMCID: PMC10465216 DOI: 10.7150/thno.84427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 08/02/2023] [Indexed: 09/01/2023] Open
Abstract
Background: Increasing evidence suggests that hemodynamic disturbed flow induces endothelial dysfunction via a complex biological process so-called endothelial to mesenchymal transition (EndoMT). Recently, DNA methyltransferases (DNMTs) was reported as a key molecular mediator to promote EndoMT. Our understanding of how DNMTs, particularly the maintenance DNMTs, DNMT1, coordinate EndoMT is still lacking. Methods: A parallel-plate flow apparatus and perfusion devices were used to apply fluid with endothelial protective pulsatile shear (PS, to mimic the laminar flow) or harmful oscillatory shear (OS, to mimic the disturbed flow) to cultured endothelial cells (ECs). Endothelial lineage tracing mice and conditional EC Dnmt1 knockout mice were subjected to a surgery of carotid partial ligation to generate the flow-accelerated atherogenesis models. Western blotting, quantitative RT-PCR, immunofluorescent staining, methylation-specific PCR, chromatin immunoprecipitation, endothelial functional assays, and assessments for neointimal formation and atherosclerosis were performed. Results: Inhibition of DNMTs with 5-aza-2'-deoxycytidine (5-Aza) suppressed the disturbed flow/OS-induced EndoMT, both in cultured cells and the endothelial lineage tracing mice. 5-Aza also ameliorated the downregulation of aldehyde dehydrogenases (ALDHs) and β-alanine biosynthesis caused by disturbed flow/OS. Knockdown of the ALDH family proteins, ALDH2, ALDH3A1, and ALDH6A1, showed an EndoMT-induction effect as OS. Supplementation of cells with the functional metabolites of β-alanine, carnosine and acetyl-CoA (acetate), reversed EndoMT, likely via inhibiting the phosphorylation of Smad2/3. Endothelial-specific knockout of Dnmt1 protected the vasculature from disturbed flow-induced remodeling and atherosclerosis. Conclusions: Endothelial DNMT1 acts as one of the key epigenetic factors to mediate the hemodynamically regulated EndoMT at least through repressing the expression of ALDH2, ALDH3A1, and ALDH6A1. Supplementation with carnosine and acetate may have a great potential in the prevention and treatment of atherosclerosis.
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Affiliation(s)
- Jianan Zhao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences; Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing 100191, China
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing 100191, China
- National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides; Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing 100191, China
| | - Chuanrong Zhao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences; Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing 100191, China
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing 100191, China
- National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides; Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing 100191, China
| | - Fangfang Yang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences; Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing 100191, China
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing 100191, China
- National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides; Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing 100191, China
| | - Zhitong Jiang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences; Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing 100191, China
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing 100191, China
- National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides; Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing 100191, China
| | - Juanjuan Zhu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences; Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing 100191, China
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing 100191, China
- National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides; Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing 100191, China
| | - Weijuan Yao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences; Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - Wei Pang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences; Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - Jing Zhou
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences; Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing 100191, China
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing 100191, China
- National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides; Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing 100191, China
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10
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Li J, Li X, Song S, Sun Z, Li Y, Yang L, Xie Z, Cai Y, Zhao Y. Mitochondria spatially and temporally modulate VSMC phenotypes via interacting with cytoskeleton in cardiovascular diseases. Redox Biol 2023; 64:102778. [PMID: 37321061 DOI: 10.1016/j.redox.2023.102778] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/31/2023] [Accepted: 06/06/2023] [Indexed: 06/17/2023] Open
Abstract
Cardiovascular diseases caused by atherosclerosis (AS) seriously endanger human health, which is closely related to vascular smooth muscle cell (VSMC) phenotypes. VSMC phenotypic transformation is marked by the alteration of phenotypic marker expression and cellular behaviour. Intriguingly, the mitochondrial metabolism and dynamics altered during VSMC phenotypic transformation. Firstly, this review combs VSMC mitochondrial metabolism in three aspects: mitochondrial ROS generation, mutated mitochondrial DNA (mtDNA) and calcium metabolism respectively. Secondly, we summarized the role of mitochondrial dynamics in regulating VSMC phenotypes. We further emphasized the association between mitochondria and cytoskelton via presenting cytoskeletal support during mitochondrial dynamics process, and discussed its impact on their respective dynamics. Finally, considering that both mitochondria and cytoskeleton are mechano-sensitive organelles, we demonstrated their direct and indirect interaction under extracellular mechanical stimuli through several mechano-sensitive signaling pathways. We additionally discussed related researches in other cell types in order to inspire deeper thinking and reasonable speculation of potential regulatory mechanism in VSMC phenotypic transformation.
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Affiliation(s)
- Jingwen Li
- Laboratory of Tissue and Cell Biology, Lab Teaching & Management Center, Chongqing Medical University, NO.1 Medical College Road, Yuzhong District, Chongqing, 400016, China
| | - Xinyue Li
- Laboratory of Tissue and Cell Biology, Lab Teaching & Management Center, Chongqing Medical University, NO.1 Medical College Road, Yuzhong District, Chongqing, 400016, China
| | - Sijie Song
- Laboratory of Tissue and Cell Biology, Lab Teaching & Management Center, Chongqing Medical University, NO.1 Medical College Road, Yuzhong District, Chongqing, 400016, China
| | - Zhengwen Sun
- Laboratory of Tissue and Cell Biology, Lab Teaching & Management Center, Chongqing Medical University, NO.1 Medical College Road, Yuzhong District, Chongqing, 400016, China
| | - Yuanzhu Li
- Laboratory of Tissue and Cell Biology, Lab Teaching & Management Center, Chongqing Medical University, NO.1 Medical College Road, Yuzhong District, Chongqing, 400016, China
| | - Long Yang
- Laboratory of Tissue and Cell Biology, Lab Teaching & Management Center, Chongqing Medical University, NO.1 Medical College Road, Yuzhong District, Chongqing, 400016, China
| | - Zhenhong Xie
- Laboratory of Tissue and Cell Biology, Lab Teaching & Management Center, Chongqing Medical University, NO.1 Medical College Road, Yuzhong District, Chongqing, 400016, China
| | - Yikui Cai
- Laboratory of Tissue and Cell Biology, Lab Teaching & Management Center, Chongqing Medical University, NO.1 Medical College Road, Yuzhong District, Chongqing, 400016, China
| | - Yinping Zhao
- Laboratory of Tissue and Cell Biology, Lab Teaching & Management Center, Chongqing Medical University, NO.1 Medical College Road, Yuzhong District, Chongqing, 400016, China.
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11
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Davis MJ, Earley S, Li YS, Chien S. Vascular mechanotransduction. Physiol Rev 2023; 103:1247-1421. [PMID: 36603156 PMCID: PMC9942936 DOI: 10.1152/physrev.00053.2021] [Citation(s) in RCA: 50] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 09/26/2022] [Accepted: 10/04/2022] [Indexed: 01/07/2023] Open
Abstract
This review aims to survey the current state of mechanotransduction in vascular smooth muscle cells (VSMCs) and endothelial cells (ECs), including their sensing of mechanical stimuli and transduction of mechanical signals that result in the acute functional modulation and longer-term transcriptomic and epigenetic regulation of blood vessels. The mechanosensors discussed include ion channels, plasma membrane-associated structures and receptors, and junction proteins. The mechanosignaling pathways presented include the cytoskeleton, integrins, extracellular matrix, and intracellular signaling molecules. These are followed by discussions on mechanical regulation of transcriptome and epigenetics, relevance of mechanotransduction to health and disease, and interactions between VSMCs and ECs. Throughout this review, we offer suggestions for specific topics that require further understanding. In the closing section on conclusions and perspectives, we summarize what is known and point out the need to treat the vasculature as a system, including not only VSMCs and ECs but also the extracellular matrix and other types of cells such as resident macrophages and pericytes, so that we can fully understand the physiology and pathophysiology of the blood vessel as a whole, thus enhancing the comprehension, diagnosis, treatment, and prevention of vascular diseases.
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Affiliation(s)
- Michael J Davis
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, Missouri
| | - Scott Earley
- Department of Pharmacology, University of Nevada, Reno, Nevada
| | - Yi-Shuan Li
- Department of Bioengineering, University of California, San Diego, California
- Institute of Engineering in Medicine, University of California, San Diego, California
| | - Shu Chien
- Department of Bioengineering, University of California, San Diego, California
- Institute of Engineering in Medicine, University of California, San Diego, California
- Department of Medicine, University of California, San Diego, California
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12
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Zhao CR, Li J, Jiang ZT, Zhu JJ, Zhao JN, Yang QR, Yao W, Pang W, Li N, Yu M, Gan Y, Zhou J. Disturbed Flow-Facilitated Margination and Targeting of Nanodisks Protect against Atherosclerosis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2204694. [PMID: 36403215 DOI: 10.1002/smll.202204694] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 10/22/2022] [Indexed: 06/16/2023]
Abstract
Disturbed blood flow induces endothelial pro-inflammatory responses that promote atherogenesis. Nanoparticle-based therapeutics aimed at treating endothelial inflammation in vasculature where disturbed flow occurs may provide a promising avenue to prevent atherosclerosis. By using a vertical-step flow apparatus and a microfluidic chip of vascular stenosis, herein, it is found that the disk-shaped versus the spherical nanoparticles exhibit preferential margination (localization and adhesion) to the regions with the pro-atherogenic disturbed flow. By employing a mouse model of carotid partial ligation, superior targeting and higher accumulation of the disk-shaped particles are also demonstrated within disturbed flow areas than that of the spherical particles. In hyperlipidemia mice, administration of disk-shaped particles loaded with hypomethylating agent decitabine (DAC) displays greater anti-inflammatory and anti-atherosclerotic effects compared with that of the spherical counterparts and exhibits reduced toxicity than "naked" DAC. The findings suggest that shaping nanoparticles to disk is an effective strategy for promoting their delivery to atheroprone endothelia.
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Affiliation(s)
- Chuan-Rong Zhao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China
- National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing, 100191, China
| | - Jingyi Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Zhi-Tong Jiang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China
- National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing, 100191, China
- Department of Cardiovascular Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, China
| | - Juan-Juan Zhu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China
- National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing, 100191, China
| | - Jia-Nan Zhao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China
- National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing, 100191, China
| | - Qian-Ru Yang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China
- National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing, 100191, China
| | - Weijuan Yao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
| | - Wei Pang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
| | - Ning Li
- Center for Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), and, Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
- School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Miaorong Yu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yong Gan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jing Zhou
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Hemorheology Center, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
- Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China
- National Health Commission Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing, 100191, China
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13
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Chang SF, Tsai HE, Kuo JT, Ruan YR, Chen CY, Wang SY, Liu PY, Lee DY. Blood Reflux-Induced Epigenetic Factors HDACs and DNMTs Are Associated with the Development of Human Chronic Venous Disease. Int J Mol Sci 2022; 23:12536. [PMID: 36293392 PMCID: PMC9603923 DOI: 10.3390/ijms232012536] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/12/2022] [Accepted: 10/17/2022] [Indexed: 11/04/2023] Open
Abstract
Blood reflux and metabolic regulation play important roles in chronic venous disease (CVD) development. Histone deacetylases (HDACs) and DNA methyltransferases (DNMTs) serve as repressors that inhibit metabolic signaling, which is induced by proatherogenic flow to promote aortic endothelial cell (EC) dysfunction and atherosclerosis. The aim of this study was to elucidate the relationship between blood reflux and epigenetic factors HDACs and DNMTs in CVD. Human varicose veins with different levels of blood reflux versus normal veins with normal venous flow were examined. The results show that HDAC-1, -2, -3, -5, and -7 are overexpressed in the endothelium of varicose veins with blood reflux. Blood reflux-induced HDACs are enhanced in the varicose veins with a longer duration time of blood reflux. In contrast, these HDACs are rarely expressed in the endothelium of the normal vein with normal venous flow. Similar results are obtained for DNMT1 and DNMT3a. Our findings suggest that the epigenetic factors, HDACs and DNMTs, are induced in venous ECs in response to blood reflux but are inhibited in response to normal venous flow. Blood reflux-induced HDACs and DNMTs could inhibit metabolic regulation and promote venous EC dysfunction, which is highly correlated with CVD pathogenesis.
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Affiliation(s)
- Shun-Fu Chang
- Department of Medical Research and Development, Chiayi Chang Gung Memorial Hospital, Chiayi 613, Taiwan
- Center for General Education, Chiayi Chang Gung University of Science and Technology, Chiayi 613, Taiwan
| | - Hsiao-En Tsai
- Division of Cardiovascular Surgery, Department of Surgery, National Taiwan University Hsin-Chu Hospital, Hsinchu 300, Taiwan
| | - Jong-Tar Kuo
- Department of Biological Science and Technology, China University of Science and Technology, Taipei 115, Taiwan
| | - Yu-Rong Ruan
- Department of Biological Science and Technology, China University of Science and Technology, Taipei 115, Taiwan
| | - Chiu-Yen Chen
- Department of Biological Science and Technology, China University of Science and Technology, Taipei 115, Taiwan
| | - Shin-Yi Wang
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 202, Taiwan
| | - Po-Yu Liu
- Division of Infectious Diseases, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung 407, Taiwan
| | - Ding-Yu Lee
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 202, Taiwan
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14
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Danielsson BE, Tieu KV, Spagnol ST, Vu KK, Cabe JI, Raisch TB, Dahl KN, Conway DE. Chromatin condensation regulates endothelial cell adaptation to shear stress. Mol Biol Cell 2022; 33:ar101. [PMID: 35895088 DOI: 10.1091/mbc.e22-02-0064] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Vascular endothelial cells (ECs) have been shown to be mechanoresponsive to the forces of blood flow, including fluid shear stress (FSS), the frictional force of blood on the vessel wall. Recent reports have shown that FSS induces epigenetic changes in chromatin. Epigenetic changes, such as methylation and acetylation of histones, not only affect gene expression but also affect chromatin condensation, which can alter nuclear stiffness. Thus, we hypothesized that changes in chromatin condensation may be an important component for how ECs adapt to FSS. Using both in vitro and in vivo models of EC adaptation to FSS, we observed an increase in histone acetylation and a decrease in histone methylation in ECs adapted to flow as compared with static. Using small molecule drugs, as well as vascular endothelial growth factor, to change chromatin condensation, we show that decreasing chromatin condensation enables cells to more quickly align to FSS, whereas increasing chromatin condensation inhibited alignment. Additionally, we show data that changes in chromatin condensation can also prevent or increase DNA damage, as measured by phosphorylation of γH2AX. Taken together, these results indicate that chromatin condensation, and potentially by extension nuclear stiffness, is an important aspect of EC adaptation to FSS.
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Affiliation(s)
- Brooke E Danielsson
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia 23284
| | - Katie V Tieu
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia 23284
| | - Stephen T Spagnol
- Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213
| | - Kira K Vu
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia 23284
| | - Jolene I Cabe
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia 23284
| | - Tristan B Raisch
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia 23284
| | - Kris Noel Dahl
- Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213.,Forensics Department, Thornton Tomasetti, New York City, NY 10271
| | - Daniel E Conway
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia 23284.,Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210.,Center for Cancer Engineering, and Arthur G. James Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210
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15
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Jain N, Lord JM, Vogel V. Mechanoimmunology: Are inflammatory epigenetic states of macrophages tuned by biophysical factors? APL Bioeng 2022; 6:031502. [PMID: 36051106 PMCID: PMC9427154 DOI: 10.1063/5.0087699] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 07/26/2022] [Indexed: 11/17/2022] Open
Abstract
Many inflammatory diseases that are responsible for a majority of deaths are still uncurable, in part as the underpinning pathomechanisms and how to combat them is still poorly understood. Tissue-resident macrophages play pivotal roles in the maintenance of tissue homeostasis, but if they gradually convert to proinflammatory phenotypes, or if blood-born proinflammatory macrophages persist long-term after activation, they contribute to chronic inflammation and fibrosis. While biochemical factors and how they regulate the inflammatory transcriptional response of macrophages have been at the forefront of research to identify targets for therapeutic interventions, evidence is increasing that physical factors also tune the macrophage phenotype. Recently, several mechanisms have emerged as to how physical factors impact the mechanobiology of macrophages, from the nuclear translocation of transcription factors to epigenetic modifications, perhaps even DNA methylation. Insight into the mechanobiology of macrophages and associated epigenetic modifications will deliver novel therapeutic options going forward, particularly in the context of increased inflammation with advancing age and age-related diseases. We review here how biophysical factors can co-regulate pro-inflammatory gene expression and epigenetic modifications and identify knowledge gaps that require urgent attention if this therapeutic potential is to be realized.
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Affiliation(s)
- Nikhil Jain
- Authors to whom correspondence should be addressed: and
| | | | - Viola Vogel
- Department of Health Sciences and Technology, Institute of Translational Medicine, ETH Zurich, Zurich, Switzerland
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16
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Moonen JR, Chappell J, Shi M, Shinohara T, Li D, Mumbach MR, Zhang F, Nair RV, Nasser J, Mai DH, Taylor S, Wang L, Metzger RJ, Chang HY, Engreitz JM, Snyder MP, Rabinovitch M. KLF4 recruits SWI/SNF to increase chromatin accessibility and reprogram the endothelial enhancer landscape under laminar shear stress. Nat Commun 2022; 13:4941. [PMID: 35999210 PMCID: PMC9399231 DOI: 10.1038/s41467-022-32566-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 08/05/2022] [Indexed: 12/14/2022] Open
Abstract
Physiologic laminar shear stress (LSS) induces an endothelial gene expression profile that is vasculo-protective. In this report, we delineate how LSS mediates changes in the epigenetic landscape to promote this beneficial response. We show that under LSS, KLF4 interacts with the SWI/SNF nucleosome remodeling complex to increase accessibility at enhancer sites that promote the expression of homeostatic endothelial genes. By combining molecular and computational approaches we discover enhancers that loop to promoters of KLF4- and LSS-responsive genes that stabilize endothelial cells and suppress inflammation, such as BMPR2, SMAD5, and DUSP5. By linking enhancers to genes that they regulate under physiologic LSS, our work establishes a foundation for interpreting how non-coding DNA variants in these regions might disrupt protective gene expression to influence vascular disease.
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Affiliation(s)
- Jan-Renier Moonen
- Vera Moulton Wall Center for Pulmonary Vascular Diseases, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, 94305, USA
- BASE Initiative, Betty Irene Moore Children's Heart Center, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - James Chappell
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Minyi Shi
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Tsutomu Shinohara
- Vera Moulton Wall Center for Pulmonary Vascular Diseases, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, 94305, USA
- BASE Initiative, Betty Irene Moore Children's Heart Center, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Dan Li
- Vera Moulton Wall Center for Pulmonary Vascular Diseases, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Maxwell R Mumbach
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Center for Personal Dynamic Regulomes, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Fan Zhang
- Vera Moulton Wall Center for Pulmonary Vascular Diseases, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Ramesh V Nair
- Stanford Center for Genomics and Personalized Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Joseph Nasser
- Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
| | - Daniel H Mai
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Shalina Taylor
- Vera Moulton Wall Center for Pulmonary Vascular Diseases, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Lingli Wang
- Vera Moulton Wall Center for Pulmonary Vascular Diseases, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, 94305, USA
- BASE Initiative, Betty Irene Moore Children's Heart Center, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Ross J Metzger
- Vera Moulton Wall Center for Pulmonary Vascular Diseases, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Howard Y Chang
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Center for Personal Dynamic Regulomes, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Jesse M Engreitz
- BASE Initiative, Betty Irene Moore Children's Heart Center, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
| | - Michael P Snyder
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Stanford Center for Genomics and Personalized Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Marlene Rabinovitch
- Vera Moulton Wall Center for Pulmonary Vascular Diseases, Stanford University School of Medicine, Stanford, CA, 94305, USA.
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA, 94305, USA.
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, 94305, USA.
- BASE Initiative, Betty Irene Moore Children's Heart Center, Lucile Packard Children's Hospital, Stanford University School of Medicine, Stanford, CA, 94305, USA.
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17
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Salvador J, Iruela-Arispe ML. Nuclear Mechanosensation and Mechanotransduction in Vascular Cells. Front Cell Dev Biol 2022; 10:905927. [PMID: 35784481 PMCID: PMC9247619 DOI: 10.3389/fcell.2022.905927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 05/31/2022] [Indexed: 11/24/2022] Open
Abstract
Vascular cells are constantly subjected to physical forces associated with the rhythmic activities of the heart, which combined with the individual geometry of vessels further imposes oscillatory, turbulent, or laminar shear stresses on vascular cells. These hemodynamic forces play an important role in regulating the transcriptional program and phenotype of endothelial and smooth muscle cells in different regions of the vascular tree. Within the aorta, the lesser curvature of the arch is characterized by disturbed, oscillatory flow. There, endothelial cells become activated, adopting pro-inflammatory and athero-prone phenotypes. This contrasts the descending aorta where flow is laminar and endothelial cells maintain a quiescent and atheroprotective phenotype. While still unclear, the specific mechanisms involved in mechanosensing flow patterns and their molecular mechanotransduction directly impact the nucleus with consequences to transcriptional and epigenetic states. The linker of nucleoskeleton and cytoskeleton (LINC) protein complex transmits both internal and external forces, including shear stress, through the cytoskeleton to the nucleus. These forces can ultimately lead to changes in nuclear integrity, chromatin organization, and gene expression that significantly impact emergence of pathology such as the high incidence of atherosclerosis in progeria. Therefore, there is strong motivation to understand how endothelial nuclei can sense and respond to physical signals and how abnormal responses to mechanical cues can lead to disease. Here, we review the evidence for a critical role of the nucleus as a mechanosensor and the importance of maintaining nuclear integrity in response to continuous biophysical forces, specifically shear stress, for proper vascular function and stability.
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Affiliation(s)
| | - M. Luisa Iruela-Arispe
- Department of Cell and Developmental Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
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18
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Wang Y, Shi R, Zhai R, Yang S, Peng T, Zheng F, Shen Y, Li M, Li L. Matrix stiffness regulates macrophage polarization in atherosclerosis. Pharmacol Res 2022; 179:106236. [PMID: 35483516 DOI: 10.1016/j.phrs.2022.106236] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 04/01/2022] [Accepted: 04/21/2022] [Indexed: 12/12/2022]
Abstract
Atherosclerosis is a chronic inflammatory disease and the pathological basis of many fatal cardiovascular diseases. Macrophages, the main inflammatory cells in atherosclerotic plaque, have a paradox role in disease progression. In response to different microenvironments, macrophages mainly have two polarized directions: pro-inflammatory macrophages and anti-inflammatory macrophages. More and more evidence shows that macrophage is mechanosensitive and matrix stiffness regulate macrophage phenotypes in atherosclerosis. However, the molecular mechanism of matrix stiffness regulating macrophage polarization still lacks in-depth research, which hinders the development of new anti-atherosclerotic therapies. In this review, we discuss the important role of matrix stiffness in regulating macrophage polarization through mechanical signal transduction (Hippo, Piezo, cytoskeleton, and integrin) and epigenetic mechanisms (miRNA, DNA methylation, and histone). We hope to provide a new perspective for atherosclerosis therapy by targeting matrix stiffness and macrophage polarization.
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Affiliation(s)
- Yin Wang
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Ruotong Shi
- Norman Bethune College of Medicine, Jilin University, Changchun 130021, China
| | - Ran Zhai
- Norman Bethune College of Medicine, Jilin University, Changchun 130021, China
| | - Shiyan Yang
- Norman Bethune College of Medicine, Jilin University, Changchun 130021, China
| | - Tianqi Peng
- Norman Bethune College of Medicine, Jilin University, Changchun 130021, China
| | - Fuwen Zheng
- Norman Bethune College of Medicine, Jilin University, Changchun 130021, China
| | - YanNan Shen
- NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun 130021, China.
| | - Meiying Li
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China.
| | - Lisha Li
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China.
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19
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Fakhrolmobasheri M, Shiravi A, Zeinalian M. SARS-CoV-2 Interaction with Human DNA Methyl Transferase 1: A Potential Risk for Increasing the Incidence of Later Chronic Diseases in the Survived Patients. Int J Prev Med 2022; 13:23. [PMID: 35392323 PMCID: PMC8980824 DOI: 10.4103/ijpvm.ijpvm_628_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 06/27/2021] [Indexed: 11/26/2022] Open
Abstract
Currently, the COVID-19 pandemic is the most discussed subject in medical researches worldwide. As the knowledge is expanded about the disease, more hypotheses become created. A recent study on the viral protein interaction map revealed that SARS-CoV-2 open reading frame 8 (ORF8) interacts with human DNA methyl transferase1 (DNMT1), an active epigenetic agent in DNA methylation. Moreover, DNMT1 is a contributor to a variety of chronic diseases which could cause some epigenetic dysregulation in infected cells, especially leukocytes, pancreatic beta, and endothelial cells. Regarding the fact that epigenetic alterations have a partial, but not completely reversible phenomena, it raises the question that if this interaction may cause long-term complications such as diabetes, atherosclerosis, cancer, and autoimmune diseases. Accordingly, long follow-up studies on the recovered patients from COVID-19 are recommended.
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Affiliation(s)
- Mohammad Fakhrolmobasheri
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Amirabbas Shiravi
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mehrdad Zeinalian
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.,Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-Communicable Diseases, Isfahan University of Medical Sciences, Isfahan, Iran.,Iranians Cancer Control Charity Institute (MACSA), Isfahan, Iran
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20
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Rodríguez-Mejía LC, Romero-Estudillo I, Rivillas-Acevedo LA, French-Pacheco L, Silva-Martínez GA, Alvarado-Caudillo Y, Colín-Castelán D, Rodríguez-Ríos D, Wrobel K, Wrobel K, Lund G, Zaina S. The DNA Methyltransferase Inhibitor RG108 is Converted to Activator Following Conjugation with Short Peptides. Int J Pept Res Ther 2022. [DOI: 10.1007/s10989-022-10390-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Sharma R, Sharma S, Thakur A, Singh A, Singh J, Nepali K, Liou JP. The Role of Epigenetic Mechanisms in Autoimmune, Neurodegenerative, Cardiovascular, and Imprinting Disorders. Mini Rev Med Chem 2022; 22:1977-2011. [PMID: 35176978 DOI: 10.2174/1389557522666220217103441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/01/2021] [Accepted: 11/11/2021] [Indexed: 11/22/2022]
Abstract
Epigenetic mutations like aberrant DNA methylation, histone modifications, or RNA silencing are found in a number of human diseases. This review article discusses the epigenetic mechanisms involved in neurodegenerative disorders, cardiovascular disorders, auto-immune disorder, and genomic imprinting disorders. In addition, emerging epigenetic therapeutic strategies for the treatment of such disorders are presented. Medicinal chemistry campaigns highlighting the efforts of the chemists invested towards the rational design of small molecule inhibitors have also been included. Pleasingly, several classes of epigenetic inhibitors, DNMT, HDAC, BET, HAT, and HMT inhibitors along with RNA based therapies have exhibited the potential to emerge as therapeutics in the longer run. It is quite hopeful that epigenetic modulator-based therapies will advance to clinical stage investigations by leaps and bounds.
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Affiliation(s)
- Ram Sharma
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Sachin Sharma
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Amandeep Thakur
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Arshdeep Singh
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Jagjeet Singh
- School of Pharmacy, University of Queensland, Brisbane, QLD, Australia.,Department of Pharmacy, Rayat-Bahara Group of Institutes, Hoshiarpur, India
| | - Kunal Nepali
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Jing Ping Liou
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
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22
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Tang H, Zeng Z, Shang C, Li Q, Liu J. Epigenetic Regulation in Pathology of Atherosclerosis: A Novel Perspective. Front Genet 2022; 12:810689. [PMID: 34976029 PMCID: PMC8714670 DOI: 10.3389/fgene.2021.810689] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 12/02/2021] [Indexed: 12/19/2022] Open
Abstract
Atherosclerosis, characterized by atherosclerotic plaques, is a complex pathological process that involves different cell types and can be seen as a chronic inflammatory disease. In the advanced stage, the ruptured atherosclerotic plaque can induce deadly accidents including ischemic stroke and myocardial infarction. Epigenetics regulation, including DNA methylation, histone modification, and non-coding RNA modification. maintains cellular identity via affecting the cellular transcriptome. The epigenetic modification process, mediating by epigenetic enzymes, is dynamic under various stimuli, which can be reversely altered. Recently, numerous studies have evidenced the close relationship between atherosclerosis and epigenetic regulations in atherosclerosis, providing us with a novel perspective in researching mechanisms and finding novel therapeutic targets of this serious disease. Here, we critically review the recent discoveries between epigenetic regulation mechanisms in atherosclerosis.
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Affiliation(s)
- Haishuang Tang
- Department of Neurosurgery, Changhai Hospital, Naval Military Medical University, Shanghai, China
| | - Zhangwei Zeng
- Department of Neurosurgery, Changhai Hospital, Naval Military Medical University, Shanghai, China
| | - Chenghao Shang
- Department of Neurosurgery, Changhai Hospital, Naval Military Medical University, Shanghai, China
| | - Qiang Li
- Department of Neurosurgery, Changhai Hospital, Naval Military Medical University, Shanghai, China
| | - Jianmin Liu
- Department of Neurosurgery, Changhai Hospital, Naval Military Medical University, Shanghai, China
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23
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Vasishta S, Umakanth S, Adiga P, Joshi MB. Extrinsic and intrinsic factors influencing metabolic memory in type 2 diabetes. Vascul Pharmacol 2021; 142:106933. [PMID: 34763098 DOI: 10.1016/j.vph.2021.106933] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/18/2021] [Accepted: 11/04/2021] [Indexed: 12/24/2022]
Abstract
Direct and indirect influence of pathological conditions in Type 2 Diabetes (T2D) on vasculature manifests in micro and/or macro vascular complications that act as a major source of morbidity and mortality. Although preventive therapies exist to control hyperglycemia, diabetic subjects are always at risk to accrue vascular complications. One of the hypotheses explained is 'glycemic' or 'metabolic' memory, a process of permanent epigenetic change in different cell types whereby diabetes associated vascular complications continue despite glycemic control by antidiabetic drugs. Epigenetic mechanisms including DNA methylation possess a strong influence on the association between environment and gene expression, thus indicating its importance in the pathogenesis of a complex disease such as T2D. The vascular system is more prone to environmental influences and present high flexibility in response to physiological and pathological challenges. DNA methylation based epigenetic changes during metabolic memory are influenced by sustained hyperglycemia, inflammatory mediators, gut microbiome composition, lifestyle modifications and gene-nutrient interactions. Hence, understanding underlying mechanisms in manifesting vascular complications regulated by DNA methylation is of high clinical importance. The review provides an insight into various extrinsic and intrinsic factors influencing the regulation of DNA methyltransferases contributing to the pathogenesis of vascular complications during T2D.
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Affiliation(s)
- Sampara Vasishta
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Shashikiran Umakanth
- Department of Medicine, Dr. T.M.A. Pai Hospital, Manipal Academy of Higher Education, Udupi 576101, Karnataka, India
| | - Prashanth Adiga
- Department of Reproductive Medicine and Surgery (MARC), Kasturba Hospital, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Manjunath B Joshi
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India.
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24
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Chen ZB, Liu X, Chen AT. "Enhancing" mechanosensing: Enhancers and enhancer-derived long non-coding RNAs in endothelial response to flow. CURRENT TOPICS IN MEMBRANES 2021; 87:153-169. [PMID: 34696884 DOI: 10.1016/bs.ctm.2021.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Endothelial cells (ECs), uniquely localized and strategically forming the inner lining of vascular wall, constitute the largest cell surface by area in the human body. The dynamic sensing and response of ECs to mechanical cues, especially shear stress, is crucial for maintenance of vascular homeostasis. It is well recognized that different flow patterns associated with atheroprotective vs atheroprone regions in the arterial tree, result in distinct EC functional phenotypes with differential transcriptome profiles. Mounting evidence has demonstrated an integrative and essential regulatory role of non-coding genome in EC biology. In particular, recent studies have begun to reveal the importance of enhancers and enhancer-derived transcripts in flow-regulated EC gene expression and function. In this minireview, we summarize studies in this area and discuss examples in support of the emerging importance of enhancers and enhancer(-derived) long non-coding RNAs (elncRNAs) in EC mechanosensing, with a focus on flow-responsive EC transcription. Finally, we will provide perspective and discuss standing questions to elucidate the role of these novel regulators in EC mechanobiology.
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Affiliation(s)
- Zhen Bouman Chen
- Department of Diabetes Complications and Metabolism, Duarte, CA, United States; Irell and Manella Graduate School of Biological Sciences, Duarte, CA, United States.
| | - Xuejing Liu
- Department of Diabetes Complications and Metabolism, Duarte, CA, United States
| | - Aleysha T Chen
- Department of Bioengineering, University of California, Berkeley, CA, United States
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25
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METTL3-dependent N 6-methyladenosine RNA modification mediates the atherogenic inflammatory cascades in vascular endothelium. Proc Natl Acad Sci U S A 2021; 118:2025070118. [PMID: 33579825 DOI: 10.1073/pnas.2025070118] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Atherosclerosis is characterized by the plaque formation that restricts intraarterial blood flow. The disturbed blood flow with the associated oscillatory stress (OS) at the arterial curvatures and branch points can trigger endothelial activation and is one of the risk factors of atherosclerosis. Many studies reported the mechanotransduction related to OS and atherogenesis; however, the transcriptional and posttranscriptional regulatory mechanisms of atherosclerosis remain unclear. Herein, we investigated the role of N6-methyladenosine (m6A) RNA methylation in mechanotransduction in endothelial cells (ECs) because of its important role in epitranscriptome regulation. We have identified m6A methyltransferase METTL3 as a responsive hub to hemodynamic forces and atherogenic stimuli in ECs. OS led to an up-regulation of METTL3 expression, accompanied by m6A RNA hypermethylation, increased NF-κB p65 Ser536 phosphorylation, and enhanced monocyte adhesion. Knockdown of METTL3 abrogated this OS-induced m6A RNA hypermethylation and other manifestations, while METTL3 overexpression led to changes resembling the OS effects. RNA-sequencing and m6A-enhanced cross-linking and immunoprecipitation (eCLIP) experiments revealed NLRP1 and KLF4 as two hemodynamics-related downstream targets of METTL3-mediated hypermethylation. The METTL3-mediated RNA hypermethylation up-regulated NLRP1 transcript and down-regulated KLF4 transcript through YTHDF1 and YTHDF2 m6A reader proteins, respectively. In the in vivo atherosclerosis model, partial ligation of the carotid artery led to plaque formation and up-regulation of METTL3 and NLRP1, with down-regulation of KLF4; knockdown of METTL3 via repetitive shRNA administration prevented the atherogenic process, NLRP3 up-regulation, and KLF4 down-regulation. Collectively, we have demonstrated that METTL3 serves a central role in the atherogenesis induced by OS and disturbed blood flow.
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26
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Chang TI, Wu X, Boström KI, Tran HA, Couto-Souza PH, Friedlander AH. Panoramic imaged carotid atheromas are associated with increased neutrophil count: both validated, independent predictors of near-term myocardial infarction. Dentomaxillofac Radiol 2021; 50:20210045. [PMID: 34111366 DOI: 10.1259/dmfr.20210045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES Panoramic images (PXs) demonstrating calcified carotid artery atheromas (CCAAs) are associated with heightened risk of near-term myocardial infarction (MI). Elevated neutrophil counts (NC) within normal range 2,500-6,000 per mm3 are likewise associated with future MI signaling the role neutrophils play in the chronic inflammation process underlying coronary artery atherogenesis. We determined if CCAAs on PXs are associated with increased NC. METHODS Investigators implemented a retrospective study of PXs and accompanying medical records of white males ≥ 65 years treated by a VA dental service. Two groups (N = 60 each) were constituted, one with atheromas (CCAA+) and one without (CCAA-). Predictor variable was CCAA + and outcome variable was NC. Bootstrapping analysis determined the difference in mean NCs between two groups, significance set at ≤0.05. RESULTS The study group of (CCAA+) (mean age 75.9; range 69-91 years) demonstrated a mean NC of 4,843 per mm3 and control group (CCAA-) (mean age 75.3; range; 66-94) a mean NC of 4,108 per mm3. The difference between the groups was significant (p = 0.0008) (95% CI of difference of mean: -432, 431; observed effect size 736). CONCLUSIONS CCAAs on PXs of elderly white males are associated with elevated NC; amplifying need for medical consultation prior to invasive dental procedures.
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Affiliation(s)
- Tina I Chang
- Inpatient Oral and Maxillofacial Surgery, Veterans Affairs Great Los Angeles Healthcare System, Los Angeles, CA, USA.,Oral and Maxillofacial Surgery, School of Dentistry, University of California, Los Angeles, CA, USA
| | - Xiuju Wu
- Division of Cardiology, David Geffen School of Medicine at UCLA, University of California, Los Angeles, CA, USA
| | - Kristina I Boström
- Cardiology, VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA.,Medicine/Cardiology, David Geffen School of Medicine at UCLA and at the Molecular Biology Institute, University of California, Los Angeles, CA, USA
| | - Hoang-Anh Tran
- Periodontology, Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, CA, USA
| | - Paulo Henrique Couto-Souza
- Maxillofacial Radiology, Dentistry/School of Life Sciences, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil
| | - Arthur H Friedlander
- Maxillofacial Surgery & Medicine, Dental Service, Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, CA, USA.,Quality Assurance Hospital Dental Service, Ronald Reagan UCLA Medical Center and Professor-in-Residence of Oral and Maxillofacial Surgery, School of Dentistry, University of California, Los Angeles, CA, USA
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27
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Khan A, Paneni F, Jandeleit-Dahm K. Cell-specific epigenetic changes in atherosclerosis. Clin Sci (Lond) 2021; 135:1165-1187. [PMID: 33988232 PMCID: PMC8314213 DOI: 10.1042/cs20201066] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 04/08/2021] [Accepted: 04/27/2021] [Indexed: 12/28/2022]
Abstract
Atherosclerosis is a disease of large and medium arteries that can lead to life-threatening cerebrovascular and cardiovascular consequences such as heart failure and stroke and is a major contributor to cardiovascular-related mortality worldwide. Atherosclerosis development is a complex process that involves specific structural, functional and transcriptional changes in different vascular cell populations at different stages of the disease. The application of single-cell RNA sequencing (scRNA-seq) analysis has discovered not only disease-related cell-specific transcriptomic profiles but also novel subpopulations of cells once thought as homogenous cell populations. Vascular cells undergo specific transcriptional changes during the entire course of the disease. Epigenetics is the instruction-set-architecture in living cells that defines and maintains the cellular identity by regulating the cellular transcriptome. Although different cells contain the same genetic material, they have different epigenomic signatures. The epigenome is plastic, dynamic and highly responsive to environmental stimuli. Modifications to the epigenome are driven by an array of epigenetic enzymes generally referred to as writers, erasers and readers that define cellular fate and destiny. The reversibility of these modifications raises hope for finding novel therapeutic targets for modifiable pathological conditions including atherosclerosis where the involvement of epigenetics is increasingly appreciated. This article provides a critical review of the up-to-date research in the field of epigenetics mainly focusing on in vivo settings in the context of the cellular role of individual vascular cell types in the development of atherosclerosis.
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Affiliation(s)
- Abdul Waheed Khan
- Department of Diabetes, Central Clinical School, Monash University, Melbourne, Australia
| | - Francesco Paneni
- Cardiovascular Epigenetics and Regenerative Medicine, Centre for Molecular Cardiology, University of Zurich, Switzerland
| | - Karin A.M. Jandeleit-Dahm
- Department of Diabetes, Central Clinical School, Monash University, Melbourne, Australia
- German Diabetes Centre, Leibniz Centre for Diabetes Research at the Heinrich Heine University, Dusseldorf, Germany
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28
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Yang X, Yang Y, Guo J, Meng Y, Li M, Yang P, Liu X, Aung LHH, Yu T, Li Y. Targeting the epigenome in in-stent restenosis: from mechanisms to therapy. MOLECULAR THERAPY. NUCLEIC ACIDS 2021; 23:1136-1160. [PMID: 33664994 PMCID: PMC7896131 DOI: 10.1016/j.omtn.2021.01.024] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Coronary artery disease (CAD) is one of the most common causes of death worldwide. The introduction of percutaneous revascularization has revolutionized the therapy of patients with CAD. Despite the advent of drug-eluting stents, restenosis remains the main challenge in treating patients with CAD. In-stent restenosis (ISR) indicates the reduction in lumen diameter after percutaneous coronary intervention, in which the vessel's lumen re-narrowing is attributed to the aberrant proliferation and migration of vascular smooth muscle cells (VSMCs) and dysregulation of endothelial cells (ECs). Increasing evidence has demonstrated that epigenetics is involved in the occurrence and progression of ISR. In this review, we provide the latest and comprehensive analysis of three separate but related epigenetic mechanisms regulating ISR, namely, DNA methylation, histone modification, and non-coding RNAs. Initially, we discuss the mechanism of restenosis. Furthermore, we discuss the biological mechanism underlying the diverse epigenetic modifications modulating gene expression and functions of VSMCs, as well as ECs in ISR. Finally, we discuss potential therapeutic targets of the small molecule inhibitors of cardiovascular epigenetic factors. A more detailed understanding of epigenetic regulation is essential for elucidating this complex biological process, which will assist in developing and improving ISR therapy.
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Affiliation(s)
- Xi Yang
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Road No. 59 Haier, Qingdao 266100, Shandong, People’s Republic of China
| | - Yanyan Yang
- Department of Immunology, School of Basic Medicine, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, People’s Republic of China
| | - Junjie Guo
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Road No. 59 Haier, Qingdao 266100, Shandong, People’s Republic of China
| | - Yuanyuan Meng
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, No. 16 Jiangsu Road, Qingdao 266000, People’s Republic of China
| | - Min Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, Qingdao 266021, People’s Republic of China
| | - Panyu Yang
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, No. 16 Jiangsu Road, Qingdao 266000, People’s Republic of China
| | - Xin Liu
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Road No. 59 Haier, Qingdao 266100, Shandong, People’s Republic of China
| | - Lynn Htet Htet Aung
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, Qingdao 266021, People’s Republic of China
| | - Tao Yu
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, No. 16 Jiangsu Road, Qingdao 266000, People’s Republic of China
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, No. 38 Dengzhou Road, Qingdao 266021, People’s Republic of China
| | - Yonghong Li
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Road No. 59 Haier, Qingdao 266100, Shandong, People’s Republic of China
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Karthika CL, Ahalya S, Radhakrishnan N, Kartha CC, Sumi S. Hemodynamics mediated epigenetic regulators in the pathogenesis of vascular diseases. Mol Cell Biochem 2020; 476:125-143. [PMID: 32844345 DOI: 10.1007/s11010-020-03890-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/14/2020] [Indexed: 12/19/2022]
Abstract
Endothelium of blood vessels is continuously exposed to various hemodynamic forces. Flow-mediated epigenetic plasticity regulates vascular endothelial function. Recent studies have highlighted the significant role of mechanosensing-related epigenetics in localized endothelial dysfunction and the regional susceptibility for lesions in vascular diseases. In this article, we review the epigenetic mechanisms such as DNA de/methylation, histone modifications, as well as non-coding RNAs in promoting endothelial dysfunction in major arterial and venous diseases, consequent to hemodynamic alterations. We also discuss the current challenges and future prospects for the use of mechanoepigenetic mediators as biomarkers of early stages of vascular diseases and dysregulated mechanosensing-related epigenetic regulators as therapeutic targets in various vascular diseases.
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Affiliation(s)
- C L Karthika
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, 695014, India
| | - S Ahalya
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, 695014, India
| | - N Radhakrishnan
- St.Thomas Institute of Research on Venous Diseases, Changanassery, Kerala, India
| | - C C Kartha
- Society for Continuing Medical Education & Research (SOCOMER), Kerala Institute of Medical Sciences, Thiruvananthapuram, Kerala, India
| | - S Sumi
- Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, 695014, India.
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30
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Russell-Hallinan A, Watson CJ, O'Dwyer D, Grieve DJ, O'Neill KM. Epigenetic Regulation of Endothelial Cell Function by Nucleic Acid Methylation in Cardiac Homeostasis and Disease. Cardiovasc Drugs Ther 2020; 35:1025-1044. [PMID: 32748033 PMCID: PMC8452583 DOI: 10.1007/s10557-020-07019-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Pathological remodelling of the myocardium, including inflammation, fibrosis and hypertrophy, in response to acute or chronic injury is central in the development and progression of heart failure (HF). While both resident and infiltrating cardiac cells are implicated in these pathophysiological processes, recent evidence has suggested that endothelial cells (ECs) may be the principal cell type responsible for orchestrating pathological changes in the failing heart. Epigenetic modification of nucleic acids, including DNA, and more recently RNA, by methylation is essential for physiological development due to their critical regulation of cellular gene expression. As accumulating evidence has highlighted altered patterns of DNA and RNA methylation in HF at both the global and individual gene levels, much effort has been directed towards defining the precise role of such cell-specific epigenetic changes in the context of HF. Considering the increasingly apparent crucial role that ECs play in cardiac homeostasis and disease, this article will specifically focus on nucleic acid methylation (both DNA and RNA) in the failing heart, emphasising the key influence of these epigenetic mechanisms in governing EC function. This review summarises current understanding of DNA and RNA methylation alterations in HF, along with their specific role in regulating EC function in response to stress (e.g. hyperglycaemia, hypoxia). Improved appreciation of this important research area will aid in further implicating dysfunctional ECs in HF pathogenesis, whilst informing development of EC-targeted strategies and advancing potential translation of epigenetic-based therapies for specific targeting of pathological cardiac remodelling in HF.
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Affiliation(s)
- Adam Russell-Hallinan
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK
| | - Chris J Watson
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK
| | - Denis O'Dwyer
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK
| | - David J Grieve
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK
| | - Karla M O'Neill
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK.
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31
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Liu JT, Liu Z, Chen Y, Qi YX, Yao QP, Jiang ZL. MicroRNA-29a Involvement in Phenotypic Transformation of Venous Smooth Muscle Cells Via Ten-Eleven Translocation Methylcytosinedioxygenase 1 in Response to Mechanical Cyclic Stretch. J Biomech Eng 2020; 142:051009. [PMID: 31513704 DOI: 10.1115/1.4044581] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Indexed: 07/25/2024]
Abstract
Mechanical stimuli play an important role in vein graft restenosis and the abnormal migration and proliferation of vascular smooth muscle cells (VSMCs) are pathological processes contributing to this disorder. Here, based on previous high-throughput sequencing data from vein grafts, miR-29a-3p and its target, the role of Ten-eleven translocation methylcytosinedioxygenase 1 (TET1) in phenotypic transformation of VSMCs induced by mechanical stretch was investigated. Vein grafts were generated by using the "cuff" technique in rats. Deep transcriptome sequencing revealed that the expression of TET1 was significantly decreased, a process confirmed by reverse transcription quantitative real-time polymerase chain reaction (RT-qPCR) analysis. MicroRNA-seq showed that miR-29a-3p was significantly up-regulated, targeting TET1 as predicted by Targetscan. Bioinformatics analysis indicated that the co-expressed genes with TET1 might modulate VSMC contraction. Venous VSMCs exposed to 10%-1.25 Hz cyclic stretch by using the Flexcell system were used to simulate arterial mechanical conditions in vitro. RT-qPCR revealed that mechanical stretch increased the expression of miR-29a-3p at 3 h. Western blot analysis showed that TET1 was significantly decreased, switching contractile VSMCs to cells with a synthetic phenotype. miR-29a-3p mimics (MI) and inhibitor (IN) transfection confirmed the negative impact of miR-29a-3p on TET1. Taken together, results from this investigation demonstrate that mechanical stretch modulates venous VSMC phenotypic transformation via the mediation of the miR-29a-3p/TET1 signaling pathway. miR-29a-3p may have potential clinical implications in the pathogenesis of remodeling of vein graft restenosis.
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Affiliation(s)
- Ji-Ting Liu
- Institute of Mechanobiology and Medical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ze Liu
- Institute of Mechanobiology and Medical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yi Chen
- Institute of Mechanobiology and Medical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ying-Xin Qi
- Institute of Mechanobiology and Medical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Qing-Ping Yao
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, P.O. Box 888, 800 Dongchuan Road Minhang, Shanghai 200240, China
| | - Zong-Lai Jiang
- Institute of Mechanobiology and Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, P.O. Box 888, 800 Dongchuan Road Minhang, Shanghai 200240, China
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Dai EN, Heo S, Mauck RL. "Looping In" Mechanics: Mechanobiologic Regulation of the Nucleus and the Epigenome. Adv Healthc Mater 2020; 9:e2000030. [PMID: 32285630 DOI: 10.1002/adhm.202000030] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 02/17/2020] [Accepted: 02/18/2020] [Indexed: 12/11/2022]
Abstract
Cells respond to physical cues in their microenvironment. These cues result in changes in cell behavior, some of which are transient, and others of which are permanent. Understanding and leveraging permanent alteration of cell behavior induced by mechanical cues, or "mechanical memories," is an important aim in cell and tissue engineering. Herein, this paper reviews the existing literature outlining how cells may store memories of biophysical cues with a specific focus on the nucleus, the storehouse of information in eukaryotic cells. In particular, this review details mechanically driven adaptations in nuclear structure and genome organization and outlines potential mechanisms by which mechanical memories may be encoded within the structure and organization of the nucleus and chromatin.
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Affiliation(s)
- Eric N. Dai
- Departments of Orthopaedic Surgery and Bioengineering University of Pennsylvania Philadelphia PA 19104 USA
- Translational Musculoskeletal Research Center Corporal Michael J. Crescenz VA Medical Center Philadelphia PA 19104 USA
| | - Su‐Jin Heo
- Departments of Orthopaedic Surgery and Bioengineering University of Pennsylvania Philadelphia PA 19104 USA
- Translational Musculoskeletal Research Center Corporal Michael J. Crescenz VA Medical Center Philadelphia PA 19104 USA
| | - Robert L. Mauck
- Departments of Orthopaedic Surgery and Bioengineering University of Pennsylvania Philadelphia PA 19104 USA
- Translational Musculoskeletal Research Center Corporal Michael J. Crescenz VA Medical Center Philadelphia PA 19104 USA
- McKay Orthopaedic Research Laboratory University of Pennsylvania Philadelphia PA 19104‐6081 USA
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Heuslein JL, Gorick CM, Price RJ. Epigenetic regulators of the revascularization response to chronic arterial occlusion. Cardiovasc Res 2020; 115:701-712. [PMID: 30629133 DOI: 10.1093/cvr/cvz001] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 12/13/2018] [Accepted: 01/03/2019] [Indexed: 12/12/2022] Open
Abstract
Peripheral arterial disease (PAD) is the leading cause of lower limb amputation and estimated to affect over 202 million people worldwide. PAD is caused by atherosclerotic lesions that occlude large arteries in the lower limbs, leading to insufficient blood perfusion of distal tissues. Given the severity of this clinical problem, there has been long-standing interest in both understanding how chronic arterial occlusions affect muscle tissue and vasculature and identifying therapeutic approaches capable of restoring tissue composition and vascular function to a healthy state. To date, the most widely utilized animal model for performing such studies has been the ischaemic mouse hindlimb. Despite not being a model of PAD per se, the ischaemic hindlimb model does recapitulate several key aspects of PAD. Further, it has served as a valuable platform upon which we have built much of our understanding of how chronic arterial occlusions affect muscle tissue composition, muscle regeneration and angiogenesis, and collateral arteriogenesis. Recently, there has been a global surge in research aimed at understanding how gene expression is regulated by epigenetic factors (i.e. non-coding RNAs, histone post-translational modifications, and DNA methylation). Thus, perhaps not unexpectedly, many recent studies have identified essential roles for epigenetic factors in regulating key responses to chronic arterial occlusion(s). In this review, we summarize the mechanisms of action of these epigenetic regulators and highlight several recent studies investigating the role of said regulators in the context of hindlimb ischaemia. In addition, we focus on how these recent advances in our understanding of the role of epigenetics in regulating responses to chronic arterial occlusion(s) can inform future therapeutic applications to promote revascularization and perfusion recovery in the setting of PAD.
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Affiliation(s)
- Joshua L Heuslein
- Department of Biomedical Engineering, University of Virginia, 415 Lane Rd, Box 800759, Health System, Charlottesville, VA, USA
| | - Catherine M Gorick
- Department of Biomedical Engineering, University of Virginia, 415 Lane Rd, Box 800759, Health System, Charlottesville, VA, USA
| | - Richard J Price
- Department of Biomedical Engineering, University of Virginia, 415 Lane Rd, Box 800759, Health System, Charlottesville, VA, USA
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Song Y, Soto J, Chen B, Yang L, Li S. Cell engineering: Biophysical regulation of the nucleus. Biomaterials 2020; 234:119743. [PMID: 31962231 DOI: 10.1016/j.biomaterials.2019.119743] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 12/02/2019] [Accepted: 12/25/2019] [Indexed: 12/12/2022]
Abstract
Cells live in a complex and dynamic microenvironment, and a variety of microenvironmental cues can regulate cell behavior. In addition to biochemical signals, biophysical cues can induce not only immediate intracellular responses, but also long-term effects on phenotypic changes such as stem cell differentiation, immune cell activation and somatic cell reprogramming. Cells respond to mechanical stimuli via an outside-in and inside-out feedback loop, and the cell nucleus plays an important role in this process. The mechanical properties of the nucleus can directly or indirectly modulate mechanotransduction, and the physical coupling of the cell nucleus with the cytoskeleton can affect chromatin structure and regulate the epigenetic state, gene expression and cell function. In this review, we will highlight the recent progress in nuclear biomechanics and mechanobiology in the context of cell engineering, tissue remodeling and disease development.
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Affiliation(s)
- Yang Song
- Department of Bioengineering, University of California, Los Angeles, CA, USA; School of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Jennifer Soto
- Department of Bioengineering, University of California, Los Angeles, CA, USA
| | - Binru Chen
- Department of Bioengineering, University of California, Los Angeles, CA, USA
| | - Li Yang
- School of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Song Li
- Department of Bioengineering, University of California, Los Angeles, CA, USA; Department of Medicine, University of California, Los Angeles, CA, USA.
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A Lifetime Achievement in Bioengineering: Professor Shu Chien. Ann Biomed Eng 2019; 47:2147-2150. [PMID: 31650299 PMCID: PMC6838045 DOI: 10.1007/s10439-019-02390-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Abstract
Aging is associated with a progressive decline in cardiovascular structure and function. Accumulating evidence links cardiovascular aging to epigenetic alterations encompassing a complex interplay of DNA methylation, histone posttranslational modifications, and dynamic nucleosome occupancy governed by numerous epigenetic factors. Advances in genomics technology have led to a profound understanding of chromatin reorganization in both cardiovascular aging and diseases. This review summarizes recent discoveries in epigenetic mechanisms involved in cardiovascular aging and diseases and discusses potential therapeutic strategies to retard cardiovascular aging and conquer related diseases through the rejuvenation of epigenetic signatures to a young state.
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Affiliation(s)
- Weiqi Zhang
- From the Advanced Innovation Center for Human Brain Protection, National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital of Capital Medical University, Beijing, China (W.Z., G.-H.L.).,National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics (W.Z., G.-H.L.), Chinese Academy of Sciences, Beijing.,Institute of Stem Cell and Regeneration (W.Z., M.S., J.Q., G.-H.L.), Chinese Academy of Sciences, Beijing.,University of Chinese Academy of Sciences, Beijing (W.Z., M.S., J.Q., G.-H.L.)
| | - Moshi Song
- State Key Laboratory of Membrane Biology, Institute of Zoology (M.S.), Chinese Academy of Sciences, Beijing.,Institute of Stem Cell and Regeneration (W.Z., M.S., J.Q., G.-H.L.), Chinese Academy of Sciences, Beijing.,University of Chinese Academy of Sciences, Beijing (W.Z., M.S., J.Q., G.-H.L.)
| | - Jing Qu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology (J.Q.), Chinese Academy of Sciences, Beijing.,Institute of Stem Cell and Regeneration (W.Z., M.S., J.Q., G.-H.L.), Chinese Academy of Sciences, Beijing.,University of Chinese Academy of Sciences, Beijing (W.Z., M.S., J.Q., G.-H.L.)
| | - Guang-Hui Liu
- From the Advanced Innovation Center for Human Brain Protection, National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital of Capital Medical University, Beijing, China (W.Z., G.-H.L.).,National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics (W.Z., G.-H.L.), Chinese Academy of Sciences, Beijing.,Institute of Stem Cell and Regeneration (W.Z., M.S., J.Q., G.-H.L.), Chinese Academy of Sciences, Beijing.,University of Chinese Academy of Sciences, Beijing (W.Z., M.S., J.Q., G.-H.L.)
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37
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Therapeutic targets for endothelial dysfunction in vascular diseases. Arch Pharm Res 2019; 42:848-861. [PMID: 31420777 DOI: 10.1007/s12272-019-01180-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 08/10/2019] [Indexed: 12/12/2022]
Abstract
Vascular endothelial cells are located on the surface of the blood vessels. It has been recognized as an important barrier to the regulation of vascular homeostasis by regulating the blood flow of micro- or macrovascular vessels. Indeed, endothelial dysfunction is an initial stage of vascular diseases and is an important prognostic indicator of cardiovascular and metabolic diseases such as atherosclerosis, hypertension, heart failure, or diabetes. Therefore, in order to develop therapeutic targets for vascular diseases, it is important to understand the key factors involved in maintaining endothelial function and the signaling pathways affecting endothelial dysfunction. The purpose of this review is to describe the function and underlying signaling pathway of oxidative stress, inflammatory factors, shear stress, and epigenetic factors in endothelial dysfunction, and introduce recent therapeutic targets for the treatment of cardiovascular diseases.
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Lee DY, Chiu JJ. Atherosclerosis and flow: roles of epigenetic modulation in vascular endothelium. J Biomed Sci 2019; 26:56. [PMID: 31387590 PMCID: PMC6685237 DOI: 10.1186/s12929-019-0551-8] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 07/29/2019] [Indexed: 12/18/2022] Open
Abstract
Background Endothelial cell (EC) dysfunctions, including turnover enrichment, gap junction disruption, inflammation, and oxidation, play vital roles in the initiation of vascular disorders and atherosclerosis. Hemodynamic forces, i.e., atherprotective pulsatile (PS) and pro-atherogenic oscillatory shear stress (OS), can activate mechanotransduction to modulate EC function and dysfunction. This review summarizes current studies aiming to elucidate the roles of epigenetic factors, i.e., histone deacetylases (HDACs), non-coding RNAs, and DNA methyltransferases (DNMTs), in mechanotransduction to modulate hemodynamics-regulated EC function and dysfunction. Main body of the abstract OS enhances the expression and nuclear accumulation of class I and class II HDACs to induce EC dysfunction, i.e., proliferation, oxidation, and inflammation, whereas PS induces phosphorylation-dependent nuclear export of class II HDACs to inhibit EC dysfunction. PS induces overexpression of the class III HDAC Sirt1 to enhance nitric oxide (NO) production and prevent EC dysfunction. In addition, hemodynamic forces modulate the expression and acetylation of transcription factors, i.e., retinoic acid receptor α and krüppel-like factor-2, to transcriptionally regulate the expression of microRNAs (miRs). OS-modulated miRs, which stimulate proliferative, pro-inflammatory, and oxidative signaling, promote EC dysfunction, whereas PS-regulated miRs, which induce anti-proliferative, anti-inflammatory, and anti-oxidative signaling, inhibit EC dysfunction. PS also modulates the expression of long non-coding RNAs to influence EC function. i.e., turnover, aligmant, and migration. On the other hand, OS enhances the expression of DNMT-1 and -3a to induce EC dysfunction, i.e., proliferation, inflammation, and NO repression. Conclusion Overall, epigenetic factors play vital roles in modulating hemodynamic-directed EC dysfunction and vascular disorders, i.e., atherosclerosis. Understanding the detailed mechanisms through which epigenetic factors regulate hemodynamics-directed EC dysfunction and vascular disorders can help us to elucidate the pathogenic mechanisms of atherosclerosis and develop potential therapeutic strategies for atherosclerosis treatment.
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Affiliation(s)
- Ding-Yu Lee
- Department of Biological Science and Technology, China University of Science and Technology, Taipei, 115, Taiwan
| | - Jeng-Jiann Chiu
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, 350, Taiwan. .,Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 300, Taiwan. .,Collage of Pharmacy, Taipei Medical University, Taipei, 110, Taiwan. .,Institute of Biomedical Engineering, National Cheng Kung University, Tainan, 701, Taiwan. .,Institute of Polymer Science and Engineering, National Taiwan University, Taipei, 106, Taiwan.
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Meli VS, Veerasubramanian PK, Atcha H, Reitz Z, Downing TL, Liu WF. Biophysical regulation of macrophages in health and disease. J Leukoc Biol 2019; 106:283-299. [PMID: 30861205 PMCID: PMC7001617 DOI: 10.1002/jlb.mr0318-126r] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Macrophages perform critical functions for homeostasis and immune defense in tissues throughout the body. These innate immune cells are capable of recognizing and clearing dead cells and pathogens, and orchestrating inflammatory and healing processes that occur in response to injury. In addition, macrophages are involved in the progression of many inflammatory diseases including cardiovascular disease, fibrosis, and cancer. Although it has long been known that macrophages respond dynamically to biochemical signals in their microenvironment, the role of biophysical cues has only recently emerged. Furthermore, many diseases that involve macrophages are also characterized by changes to the tissue biophysical environment. This review will discuss current knowledge about the effects of biophysical cues including matrix stiffness, material topography, and applied mechanical forces, on macrophage behavior. We will also describe the role of molecules that are known to be important for mechanotransduction, including adhesion molecules, ion channels, as well as nuclear mediators such as transcription factors, scaffolding proteins, and epigenetic regulators. Together, this review will illustrate a developing role of biophysical cues in macrophage biology, and also speculate upon molecular targets that may potentially be exploited therapeutically to treat disease.
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Affiliation(s)
- Vijaykumar S. Meli
- Department of Biomedical Engineering, University of California Irvine, CA 92697
- The Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California Irvine, CA 92697
| | - Praveen K. Veerasubramanian
- Department of Biomedical Engineering, University of California Irvine, CA 92697
- The Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California Irvine, CA 92697
| | - Hamza Atcha
- Department of Biomedical Engineering, University of California Irvine, CA 92697
- The Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California Irvine, CA 92697
| | - Zachary Reitz
- Department of Biomedical Engineering, University of California Irvine, CA 92697
- The Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California Irvine, CA 92697
| | - Timothy L. Downing
- Department of Biomedical Engineering, University of California Irvine, CA 92697
- The Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California Irvine, CA 92697
- Department of Microbiology and Molecular Genetics, University of California Irvine, CA 92697
| | - Wendy F. Liu
- Department of Biomedical Engineering, University of California Irvine, CA 92697
- The Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California Irvine, CA 92697
- Department of Chemical and Biomolecular Engineering, University of California Irvine, CA 92697
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40
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Xu S, Kamato D, Little PJ, Nakagawa S, Pelisek J, Jin ZG. Targeting epigenetics and non-coding RNAs in atherosclerosis: from mechanisms to therapeutics. Pharmacol Ther 2019; 196:15-43. [PMID: 30439455 PMCID: PMC6450782 DOI: 10.1016/j.pharmthera.2018.11.003] [Citation(s) in RCA: 106] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Atherosclerosis, the principal cause of cardiovascular death worldwide, is a pathological disease characterized by fibro-proliferation, chronic inflammation, lipid accumulation, and immune disorder in the vessel wall. As the atheromatous plaques develop into advanced stage, the vulnerable plaques are prone to rupture, which causes acute cardiovascular events, including ischemic stroke and myocardial infarction. Emerging evidence has suggested that atherosclerosis is also an epigenetic disease with the interplay of multiple epigenetic mechanisms. The epigenetic basis of atherosclerosis has transformed our knowledge of epigenetics from an important biological phenomenon to a burgeoning field in cardiovascular research. Here, we provide a systematic and up-to-date overview of the current knowledge of three distinct but interrelated epigenetic processes (including DNA methylation, histone methylation/acetylation, and non-coding RNAs), in atherosclerotic plaque development and instability. Mechanistic and conceptual advances in understanding the biological roles of various epigenetic modifiers in regulating gene expression and functions of endothelial cells (vascular homeostasis, leukocyte adhesion, endothelial-mesenchymal transition, angiogenesis, and mechanotransduction), smooth muscle cells (proliferation, migration, inflammation, hypertrophy, and phenotypic switch), and macrophages (differentiation, inflammation, foam cell formation, and polarization) are discussed. The inherently dynamic nature and reversibility of epigenetic regulation, enables the possibility of epigenetic therapy by targeting epigenetic "writers", "readers", and "erasers". Several Food Drug Administration-approved small-molecule epigenetic drugs show promise in pre-clinical studies for the treatment of atherosclerosis. Finally, we discuss potential therapeutic implications and challenges for future research involving cardiovascular epigenetics, with an aim to provide a translational perspective for identifying novel biomarkers of atherosclerosis, and transforming precision cardiovascular research and disease therapy in modern era of epigenetics.
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Affiliation(s)
- Suowen Xu
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.
| | - Danielle Kamato
- School of Pharmacy, The University of Queensland, Wooloongabba, QLD 4102, Australia; Department of Pharmacy, Xinhua College of Sun Yat-sen University, Guangzhou 510520, China
| | - Peter J Little
- School of Pharmacy, The University of Queensland, Wooloongabba, QLD 4102, Australia; Department of Pharmacy, Xinhua College of Sun Yat-sen University, Guangzhou 510520, China
| | - Shinichi Nakagawa
- RNA Biology Laboratory, Faculty of Pharmaceutical Sciences, Hokkaido University, Kita 12-jo Nishi 6-chome, Kita-ku, Sapporo 060-0812, Japan
| | - Jaroslav Pelisek
- Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar der Technischen Universitaet Muenchen, Germany
| | - Zheng Gen Jin
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.
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41
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Fang Y, Wu D, Birukov KG. Mechanosensing and Mechanoregulation of Endothelial Cell Functions. Compr Physiol 2019; 9:873-904. [PMID: 30873580 PMCID: PMC6697421 DOI: 10.1002/cphy.c180020] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Vascular endothelial cells (ECs) form a semiselective barrier for macromolecules and cell elements regulated by dynamic interactions between cytoskeletal elements and cell adhesion complexes. ECs also participate in many other vital processes including innate immune reactions, vascular repair, secretion, and metabolism of bioactive molecules. Moreover, vascular ECs represent a unique cell type exposed to continuous, time-dependent mechanical forces: different patterns of shear stress imposed by blood flow in macrovasculature and by rolling blood cells in the microvasculature; circumferential cyclic stretch experienced by the arterial vascular bed caused by heart propulsions; mechanical stretch of lung microvascular endothelium at different magnitudes due to spontaneous respiration or mechanical ventilation in critically ill patients. Accumulating evidence suggests that vascular ECs contain mechanosensory complexes, which rapidly react to changes in mechanical loading, process the signal, and develop context-specific adaptive responses to rebalance the cell homeostatic state. The significance of the interactions between specific mechanical forces in the EC microenvironment together with circulating bioactive molecules in the progression and resolution of vascular pathologies including vascular injury, atherosclerosis, pulmonary edema, and acute respiratory distress syndrome has been only recently recognized. This review will summarize the current understanding of EC mechanosensory mechanisms, modulation of EC responses to humoral factors by surrounding mechanical forces (particularly the cyclic stretch), and discuss recent findings of magnitude-specific regulation of EC functions by transcriptional, posttranscriptional and epigenetic mechanisms using -omics approaches. We also discuss ongoing challenges and future opportunities in developing new therapies targeting dysregulated mechanosensing mechanisms to treat vascular diseases. © 2019 American Physiological Society. Compr Physiol 9:873-904, 2019.
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Affiliation(s)
- Yun Fang
- Department of Medicine, University of Chicago, Chicago, Illinois, USA,Correspondence to
| | - David Wu
- Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Konstantin G. Birukov
- Department of Anesthesiology, University of Maryland Baltimore School of Medicine, Baltimore, Maryland, USA
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Tang RZ, Zhu JJ, Yang FF, Zhang YP, Xie SA, Liu YF, Yao WJ, Pang W, Han LL, Kong W, Wang YX, Zhang T, Zhou J. DNA methyltransferase 1 and Krüppel-like factor 4 axis regulates macrophage inflammation and atherosclerosis. J Mol Cell Cardiol 2019; 128:11-24. [DOI: 10.1016/j.yjmcc.2019.01.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 12/20/2018] [Accepted: 01/13/2019] [Indexed: 12/17/2022]
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Charbonier FW, Zamani M, Huang NF. Endothelial Cell Mechanotransduction in the Dynamic Vascular Environment. ADVANCED BIOSYSTEMS 2019; 3:e1800252. [PMID: 31328152 PMCID: PMC6640152 DOI: 10.1002/adbi.201800252] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Indexed: 12/11/2022]
Abstract
The vascular endothelial cells (ECs) that line the inner layer of blood vessels are responsible for maintaining vascular homeostasis under physiological conditions. In the presence of disease or injury, ECs can become dysfunctional and contribute to a progressive decline in vascular health. ECs are constantly exposed to a variety of dynamic mechanical stimuli, including hemodynamic shear stress, pulsatile stretch, and passive signaling cues derived from the extracellular matrix. This review describes the molecular mechanisms by which ECs perceive and interpret these mechanical signals. The translational applications of mechanosensing are then discussed in the context of endothelial-to-mesenchymal transition and engineering of vascular grafts.
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Affiliation(s)
- Frank W. Charbonier
- Department of Mechanical Engineering, Stanford University, Stanford, CA, 94305
| | - Maedeh Zamani
- Department of Cardiothoracic Surgery, Stanford University, Stanford, CA, 94305
| | - Ngan F. Huang
- Department of Cardiothoracic Surgery, Stanford University, Stanford, CA, 94305
- Veterans Affairs Palo Alto Health Care System, 3801 Miranda Avenue, Palo Alto, CA, 94304
- The Stanford Cardiovascular Institute, Stanford University, Stanford, CA, 94305
- Stanford University, 300 Pasteur Drive, MC 5407, Stanford, CA 94305-5407, USA
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Xu S, Xu Y, Yin M, Zhang S, Liu P, Koroleva M, Si S, Little PJ, Pelisek J, Jin ZG. Flow-dependent epigenetic regulation of IGFBP5 expression by H3K27me3 contributes to endothelial anti-inflammatory effects. Theranostics 2018; 8:3007-3021. [PMID: 29896299 PMCID: PMC5996356 DOI: 10.7150/thno.21966] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 02/17/2018] [Indexed: 01/11/2023] Open
Abstract
Rationale: Atherosclerosis is a chronic inflammatory and epigenetic disease that is influenced by different patterns of blood flow. However, the epigenetic mechanism whereby atheroprotective flow controls endothelial gene programming remains elusive. Here, we investigated the possibility that flow alters endothelial gene expression through epigenetic mechanisms. Methods: En face staining and western blot were used to detect protein expression. Real-time PCR was used to determine relative gene expression. RNA-sequencing of human umbilical vein endothelial cells treated with siRNA of enhancer of zeste homolog 2 (EZH2) or laminar flow was used for transcriptional profiling. Results: We found that trimethylation of histone 3 lysine 27 (H3K27me3), a repressive epigenetic mark that orchestrates gene repression, was reduced in laminar flow areas of mouse aorta and flow-treated human endothelial cells. The decrease of H3K27me3 paralleled a reduction in the epigenetic "writer"-EZH2, the catalytic subunit of the polycomb repressive complex 2 (PRC2). Moreover, laminar flow decreased expression of EZH2 via mechanosensitive miR101. Genome-wide transcriptome profiling studies in endothelial cells treated with EZH2 siRNA and flow revealed the upregulation of novel mechanosensitive gene IGFBP5 (insulin-like growth factor-binding protein 5), which is epigenetically silenced by H3K27me3. Functionally, inhibition of H3K27me3 by EZH2 siRNA or GSK126 (a specific EZH2 inhibitor) reduced H3K27me3 levels and monocyte adhesion to endothelial cells. Adenoviral overexpression of IGFBP5 also recapitulated the anti-inflammatory effects of H3K27me3 inhibition. More importantly, we observed EZH2 upregulation, and IGFBP5 downregulation, in advanced atherosclerotic plaques from human patients. Conclusion: Taken together, our findings reveal that atheroprotective flow reduces H3K27me3 as a chromatin-based mechanism to augment the expression of genes that confer an anti-inflammatory response in the endothelium. Our study exemplifies flow-dependent epigenetic regulation of endothelial gene expression, and also suggests that targeting the EZH2/H3K27me3/IGFBP5 pathway may offer novel therapeutics for inflammatory disorders such as atherosclerosis.
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Affiliation(s)
- Suowen Xu
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
| | - Yanni Xu
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
- Institute of Medicinal Biotechnology Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Meimei Yin
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
| | - Shuya Zhang
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Department of Biochemistry and Molecular Biology, Ningxia Medical University, Yinchuan, China
| | - Peng Liu
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
- Institute of Medicinal Biotechnology Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Marina Koroleva
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
| | - Shuyi Si
- Institute of Medicinal Biotechnology Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Peter J. Little
- School of Pharmacy, The University of Queensland, Pharmacy Australia Centre of Excellence (PACE), Woolloongabba QLD 4102, Australia
- Xinhua College of Sun Yat-sen University, Guangzhou, China
| | - Jaroslav Pelisek
- Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar der Technischen Universitaet Muenchen, Germany
| | - Zheng Gen Jin
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
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Kim HY, Lee DH, Shin MH, Shin HS, Kim MK, Chung JH. UV-induced DNA methyltransferase 1 promotes hypermethylation of tissue inhibitor of metalloproteinase 2 in the human skin. J Dermatol Sci 2018; 91:19-27. [PMID: 29685765 DOI: 10.1016/j.jdermsci.2018.03.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 03/09/2018] [Accepted: 03/12/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND Ultraviolet (UV) radiation has been reported to influence epigenetic regulation by affecting the expression of genome regulators such as DNA methyltransferase 1 (DNMT1). DNMT1 is a "gene silencer," that is responsible for the maintenance of DNA methylation and contribution to de novo methylation. Implications of DNMT1's involvement in the expression of UV-induced proteins have been previously reported. OBJECTIVE To investigate for changes in DNA methylation-associated gene expressions by UV and to analyze the role of DNA methylation in the suppression of TIMP2 in UV-irradiated human skin. METHODS The expression of DNA methylation-associated proteins and TIMP2 were analyzed in UV-irradiated human skin in vivo and in human dermal fibroblasts in vitro. To investigate the relationship between DNMT1 and TIMP2, we assessed the effect of DNMT1 knockdown, inhibition and overexpression on TIMP2 levels in human dermal fibroblasts. Lastly, methylation-specific PCR was used to confirm increased DNA methylation in TIMP2 promoter in response to UV. RESULTS DNMT1 expression significantly increased whereas TIMP2 expression decreased in UV-irradiated human skin in vivo and in vitro. Downregulation of DNMT1 by knockdown or inhibition resulted in increased TIMP2 expression, whereas the overexpression of DNMT1 resulted in decreased TIMP2 expression. Lastly, methylation-specific PCR confirmed increased methylation on the CpG island residing in TIMP2 promoter in UV-irradiated human dermal fibroblasts. CONCLUSION These findings suggest that UV-induced expression of DNMT1 may be responsible for mediating DNA hypermethylation in TIMP2, and thus, silencing its expression, in UV-exposed human skin.
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Affiliation(s)
- Ha-Young Kim
- Department of Biomedical Sciences, Seoul National University Graduate School, Republic of Korea; Department of Dermatology, Seoul National University College of Medicine, Republic of Korea; Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Republic of Korea; Laboratory of Cutaneous Aging Research, Biomedical Research Institute, Seoul National University Hospital, Republic of Korea
| | - Dong Hun Lee
- Department of Dermatology, Seoul National University College of Medicine, Republic of Korea; Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Republic of Korea; Laboratory of Cutaneous Aging Research, Biomedical Research Institute, Seoul National University Hospital, Republic of Korea.
| | - Mi Hee Shin
- Department of Dermatology, Seoul National University College of Medicine, Republic of Korea; Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Republic of Korea; Laboratory of Cutaneous Aging Research, Biomedical Research Institute, Seoul National University Hospital, Republic of Korea
| | - Hye Sun Shin
- Department of Biomedical Sciences, Seoul National University Graduate School, Republic of Korea; Department of Dermatology, Seoul National University College of Medicine, Republic of Korea; Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Republic of Korea; Laboratory of Cutaneous Aging Research, Biomedical Research Institute, Seoul National University Hospital, Republic of Korea
| | - Min-Kyoung Kim
- Department of Dermatology, Seoul National University College of Medicine, Republic of Korea; Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Republic of Korea; Laboratory of Cutaneous Aging Research, Biomedical Research Institute, Seoul National University Hospital, Republic of Korea.
| | - Jin Ho Chung
- Department of Biomedical Sciences, Seoul National University Graduate School, Republic of Korea; Department of Dermatology, Seoul National University College of Medicine, Republic of Korea; Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Republic of Korea; Laboratory of Cutaneous Aging Research, Biomedical Research Institute, Seoul National University Hospital, Republic of Korea; Institute of Aging, Seoul National University, Republic of Korea.
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46
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Xie SA, Zhang T, Wang J, Zhao F, Zhang YP, Yao WJ, Hur SS, Yeh YT, Pang W, Zheng LS, Fan YB, Kong W, Wang X, Chiu JJ, Zhou J. Matrix stiffness determines the phenotype of vascular smooth muscle cell in vitro and in vivo: Role of DNA methyltransferase 1. Biomaterials 2018; 155:203-216. [DOI: 10.1016/j.biomaterials.2017.11.033] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 10/23/2017] [Accepted: 11/21/2017] [Indexed: 12/22/2022]
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47
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Heuslein JL, Gorick CM, Song J, Price RJ. DNA Methyltransferase 1-Dependent DNA Hypermethylation Constrains Arteriogenesis by Augmenting Shear Stress Set Point. J Am Heart Assoc 2017; 6:JAHA.117.007673. [PMID: 29191807 PMCID: PMC5779061 DOI: 10.1161/jaha.117.007673] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Background Arteriogenesis is initiated by increased shear stress and is thought to continue until shear stress is returned to its original “set point.” However, the molecular mechanism(s) through which shear stress set point is established by endothelial cells (ECs) are largely unstudied. Here, we tested the hypothesis that DNA methyltransferase 1 (DNMT1)–dependent EC DNA methylation affects arteriogenic capacity via adjustments to shear stress set point. Methods and Results In femoral artery ligation–operated C57BL/6 mice, collateral artery segments exposed to increased shear stress without a change in flow direction (ie, nonreversed flow) exhibited global DNA hypermethylation (increased 5‐methylcytosine staining intensity) and constrained arteriogenesis (30% less diameter growth) when compared with segments exposed to both an increase in shear stress and reversed‐flow direction. In vitro, ECs exposed to a flow waveform biomimetic of nonreversed collateral segments in vivo exhibited a 40% increase in DNMT1 expression, genome‐wide hypermethylation of gene promoters, and a DNMT1‐dependent 60% reduction in proarteriogenic monocyte adhesion compared with ECs exposed to a biomimetic reversed‐flow waveform. These results led us to test whether DNMT1 regulates arteriogenic capacity in vivo. In femoral artery ligation–operated mice, DNMT1 inhibition rescued arteriogenic capacity and returned shear stress back to its original set point in nonreversed collateral segments. Conclusions Increased shear stress without a change in flow direction initiates arteriogenic growth; however, it also elicits DNMT1‐dependent EC DNA hypermethylation. In turn, this diminishes mechanosensing, augments shear stress set point, and constrains the ultimate arteriogenic capacity of the vessel. This epigenetic effect could impact both endogenous collateralization and treatment of arterial occlusive diseases.
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Affiliation(s)
- Joshua L Heuslein
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA
| | - Catherine M Gorick
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA
| | - Ji Song
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA
| | - Richard J Price
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA
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48
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Zhang YP, Huang YT, Huang TS, Pang W, Zhu JJ, Liu YF, Tang RZ, Zhao CR, Yao WJ, Li YS, Chien S, Zhou J. The Mammalian Target of Rapamycin and DNA methyltransferase 1 axis mediates vascular endothelial dysfunction in response to disturbed flow. Sci Rep 2017; 7:14996. [PMID: 29118325 PMCID: PMC5678172 DOI: 10.1038/s41598-017-15387-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 10/16/2017] [Indexed: 02/06/2023] Open
Abstract
The earliest atherosclerotic lesions preferentially develop in arterial regions experienced disturbed blood flow, which induces endothelial expression of pro-atherogenic genes and the subsequent endothelial dysfunction. Our previous study has demonstrated an up-regulation of DNA methyltransferase 1 (DNMT1) and a global hypermethylation in vascular endothelium subjected to disturbed flow. Here, we determined that DNMT1-specific inhibition in arterial wall ameliorates the disturbed flow-induced atherosclerosis through, at least in part, targeting cell cycle regulator cyclin A and connective tissue growth factor (CTGF). We identified the signaling pathways mediating the flow-induction of DNMT1. Inhibition of the mammalian target of rapamycin (mTOR) suppressed the DNMT1 up-regulation both in vitro and in vivo. Together, our results demonstrate that disturbed flow influences endothelial function and induces atherosclerosis in an mTOR/DNMT1-dependent manner. The conclusions obtained from this study might facilitate further evaluation of the epigenetic regulation of endothelial function during the pathological development of atherosclerosis and offer novel prevention and therapeutic targets of this disease.
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Affiliation(s)
- Yun-Peng Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, P.R. China
| | - Yi-Tao Huang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, P.R. China
| | - Tse-Shun Huang
- Department of Bioengineering and Institute of Engineering in Medicine, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Wei Pang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, P.R. China
| | - Juan-Juan Zhu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, P.R. China
| | - Yue-Feng Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, P.R. China
| | - Run-Ze Tang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, P.R. China
| | - Chuan-Rong Zhao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, P.R. China
| | - Wei-Juan Yao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, P.R. China
| | - Yi-Shuan Li
- Department of Bioengineering and Institute of Engineering in Medicine, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Shu Chien
- Department of Bioengineering and Institute of Engineering in Medicine, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Jing Zhou
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, P.R. China.
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49
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Systems biology analysis of longitudinal functional response of endothelial cells to shear stress. Proc Natl Acad Sci U S A 2017; 114:10990-10995. [PMID: 28973892 DOI: 10.1073/pnas.1707517114] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Blood flow and vascular shear stress patterns play a significant role in inducing and modulating physiological responses of endothelial cells (ECs). Pulsatile shear (PS) is associated with an atheroprotective endothelial phenotype, while oscillatory shear (OS) is associated with an atheroprone endothelial phenotype. Although mechanisms of endothelial shear response have been extensively studied, most studies focus on characterization of single molecular pathways, mainly at fixed time points after stress application. Here, we carried out a longitudinal time-series study to measure the transcriptome after the application of PS and OS. We performed systems analyses of transcriptional data of cultured human vascular ECs to elucidate the dynamics of endothelial responses in several functional pathways such as cell cycle, oxidative stress, and inflammation. By combining the temporal data on differentially expressed transcription factors and their targets with existing knowledge on relevant functional pathways, we infer the causal relationships between disparate endothelial functions through common transcriptional regulation mechanisms. Our study presents a comprehensive temporally longitudinal experimental study and mechanistic model of shear stress response. By comparing the relative endothelial expressions of genes between OS and PS, we provide insights and an integrated perspective into EC function in response to differential shear. This study has significant implications for the pathogenesis of vascular diseases.
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50
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Yang X, Li Y, Li Y, Ren X, Zhang X, Hu D, Gao Y, Xing Y, Shang H. Oxidative Stress-Mediated Atherosclerosis: Mechanisms and Therapies. Front Physiol 2017; 8:600. [PMID: 28878685 PMCID: PMC5572357 DOI: 10.3389/fphys.2017.00600] [Citation(s) in RCA: 262] [Impact Index Per Article: 37.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 08/03/2017] [Indexed: 12/14/2022] Open
Abstract
Atherogenesis, the formation of atherosclerotic plaques, is a complex process that involves several mechanisms, including endothelial dysfunction, neovascularization, vascular proliferation, apoptosis, matrix degradation, inflammation, and thrombosis. The pathogenesis and progression of atherosclerosis are explained differently by different scholars. One of the most common theories is the destruction of well-balanced homeostatic mechanisms, which incurs the oxidative stress. And oxidative stress is widely regarded as the redox status realized when an imbalance exists between antioxidant capability and activity species including reactive oxygen (ROS), nitrogen (RNS) and halogen species, non-radical as well as free radical species. This occurrence results in cell injury due to direct oxidation of cellular protein, lipid, and DNA or via cell death signaling pathways responsible for accelerating atherogenesis. This paper discusses inflammation, mitochondria, autophagy, apoptosis, and epigenetics as they induce oxidative stress in atherosclerosis, as well as various treatments for antioxidative stress that may prevent atherosclerosis.
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Affiliation(s)
- Xinyu Yang
- Guang'anmen Hospital, Chinese Academy of Chinese Medical SciencesBeijing, China.,Key Laboratory of Chinese Internal Medicine of the Ministry of Education, Dongzhimen Hospital, Beijing University of Chinese MedicineBeijing, China
| | - Yang Li
- Department of Cardiology, General Hospital of People's Liberation ArmyBeijing, China
| | - Yanda Li
- Guang'anmen Hospital, Chinese Academy of Chinese Medical SciencesBeijing, China
| | - Xiaomeng Ren
- Guang'anmen Hospital, Chinese Academy of Chinese Medical SciencesBeijing, China.,Key Laboratory of Chinese Internal Medicine of the Ministry of Education, Dongzhimen Hospital, Beijing University of Chinese MedicineBeijing, China
| | - Xiaoyu Zhang
- Key Laboratory of Chinese Internal Medicine of the Ministry of Education, Dongzhimen Hospital, Beijing University of Chinese MedicineBeijing, China
| | - Dan Hu
- Masonic Medical Research LaboratoryUtica, NY, United States
| | - Yonghong Gao
- Key Laboratory of Chinese Internal Medicine of the Ministry of Education, Dongzhimen Hospital, Beijing University of Chinese MedicineBeijing, China
| | - Yanwei Xing
- Guang'anmen Hospital, Chinese Academy of Chinese Medical SciencesBeijing, China
| | - Hongcai Shang
- Key Laboratory of Chinese Internal Medicine of the Ministry of Education, Dongzhimen Hospital, Beijing University of Chinese MedicineBeijing, China
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